Miguel Cervera Profile : Scipedia

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Documents published in Scipedia

A Phenomenological Model for the Solidification of Eutectic and Hypoeutectic Alloys Including Recalescence and Undercooling
M. Chiumenti, M. Cervera, E. Salsi, A. Zonato

J. of Heat Transfer (2018). (preprint) Vol. 140 (8), pp. 12

Abstract
In this work, a novel phenomenological model is proposed to study the liquid-to-solid phase change of eutectic and hypoeutectic alloy compositions. The objective is to enhance the prediction capabilities of the solidification models based on a-priori definition of the solid fraction as a function of the temperature field. However, the use of models defined at the metallurgical level is avoided to minimize the number of material parameters required. This is of great industrial interest because, on the one hand, the classical models are not able to predict recalescence and undercooling phenomena, and, on the other hand, the complexity as well as the experimental campaign necessary to feed most of the microstructure models available in the literature make their calibration difficult and very dependent on the chemical composition and the treatment of the melt. Contrarily, the proposed model allows for an easy calibration by means of few parameters. These parameters can be easily extracted from the temperature curves recorded at the hot spot of the quick cup test, typically used in the differential thermal analysis (DTA) for the quality control of the melt just before pouring. The accuracy of the numerical results is assessed by matching the temperature curves obtained via DTA of eutectic and hypoeutectic alloys. Moreover, the model is validated in more complex casting experiments where the temperature is measured at different thermocouple locations and the metallurgical features such as grain size and nucleation density are obtained from an exhaustive micrography campaign. The remarkable agreement with the experimental evidence validates the predicting capabilities of the proposed model.
Abstract
In this work, a novel phenomenological model is proposed to study the liquid-to-solid phase change of eutectic and hypoeutectic alloy compositions. The objective is to enhance [...]
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Numerical modelling of microstructure evolution in Friction Stir Welding (FSW)"
N. Dialami, M. Cervera, M. Chiumenti

Metals (2018). (preprint) Vol. 8 (3), pp. 183

Abstract
This work studies the metallurgical and microstructural aspects of Friction Stir Welding (FSW) in terms of grain size and microhardness. The modelling is based on the combination of an apropos kinematic framework for the local simulation of FSW processes and a material particle tracing technique for tracking the material flow during the weld. The resulting grain size and microhardness values are validated with experimental observations from an identical processed sample. A Sheppard-Wright constitutive relation is adopted to describe the mechanical behavior of AZ31 Mg alloy considered in this work. The strain rate and temperature histories obtained from the numerical model are stored on the tracers. The relationship among the grain size, microhardness, strain rate, and temperature is obtained using Zener-Hollomon parameter and Hall-Petch relationship. A linear description relates the logarithm of average grain size to the logarithm of Zener-Hollomon parameter. The relationship between microhardness and average grain size stands away from the linear trend.
Abstract
This work studies the metallurgical and microstructural aspects of Friction Stir Welding (FSW) in terms of grain size and microhardness. The modelling is based on the combination [...]
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Finite element analysis and experimental validation of the thermomechanical behavior in laser solid forming of Ti-6Al-4V
X. Lu, X. Lin, M. Chiumenti, M. Cervera, J. Li, L. Ma, L. Wei, Y. Hu, W. Huang

Additive Manufacturing (2018). (preprint) Vol. 21, pp. 30-40

Abstract
A three-dimensional (3D) thermomechanical coupled model for Laser Solid Forming (LSF) of Ti-6Al-4V alloy has been calibrated through experiments of 40-layers metal deposition using different scanning strategies. The sensitivity analysis of the mechanical parameters shows that the thermal expansion coefficient as well as the elastic limit of Ti-6Al-4V have a great impact on the mechanical behavior. Using the validated model and optimal mechanical parameters, the evolution of thermo-mechanical fields in LSF has been analyzed. It has been found that the stresses and distortions develop in two stages, after the deposition of the first layer and during the cooling phase after the manufacturing of the component. The cooling phase is the responsible of 70% of the residual stresses and 60% of the total distortions. The analyses indicate that by controlling the initial substrate temperature (pre-heating phase) and the final cooling phase it is possible to mitigate both distortion and residual stresses. Hence, the influence of different pre-heating procedures on the mechanical fields has been analyzed. The results show that increasing the pre-heating temperature of the substrate is the most effective way to reduce the distortions and residual stresses in Additive Manufacturing.
Abstract
A three-dimensional (3D) thermomechanical coupled model for Laser Solid Forming (LSF) of Ti-6Al-4V alloy has been calibrated through experiments of 40-layers metal [...]
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Appraisement of planar, bending and twisting cracks in 3D with isotropic and orthotropic damage models
G. Barbat, M. Cervera, M. Chiumenti

International Journal of Fracture (2018). (preprint) Vol. 210 (1-2), pp. 45–79

Abstract
This paper discusses the modeling of cracking in quasi-brittle materials using isotropic and orthotropic damage constitutive laws. A mixed strain/displacement finite element formulation is used, taking advantage of its enhanced precision and its enforced interelemental strain continuity. On the one hand, this formulation avoids the spurious mesh dependency of the computed solution associated to standard elements and does not require the use of tracking techniques. On the other hand, it greatly alleviates the spurious stress locking associated to the use of orthotropic models on standard finite elements. The performance of several isotropic and orthotropic damage constitutive laws is assessed through an extensive comparison with analytical solutions, numerical tests and experimental evidence reported in the literature. The behavior of the different damage models in terms of crack surface, collapse mechanism and force displacement curves is investigated performing 3D analyses in several conditions including Mode I, Mixed Mode and Mode III fracture. When performing the appraisement of planar, bending and twisting cracks, the enhanced accuracy of the mixed formulation allows for a distinct assessment of the several damage models considered. Aspects related to the behavior of damage models, such as the influence of Poisson’s ratio, the shape of the damage surface and the adoption of isotropic and orthotropic models are investigated and noteworthy conclusions are drawn
Abstract
This paper discusses the modeling of cracking in quasi-brittle materials using isotropic and orthotropic damage constitutive laws. A mixed strain/displacement finite element [...]
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A novel positive/negative projection in energy norm for the damage modeling of quasi-brittle solids
J. Wu, M. Cervera

Int. J. Solids and Structures (2018). (preprint) Vol. 139–140, pp. 250–269

Abstract
The asymmetric tensile/compressive material behavior and microcracks closure-reopening (MCR) effects exhibited by quasi-brittle solids are of significant importance to the nonlinear responses of engineering structures under cyclic loading, e.g., earthquake excitations. Based on our previous work (Cervera et al., 1995; Faria et al., 1998; Wu et al., 2006) this work addresses a novel thermodynamically consistent unilateral damage model for concrete. In particular, the positive/negative projection (PNP) of the effective stress tensor and the additive bi-scalar damage constitutive relation are maintained owing to the conceptual simplicity and computational efficiency. It is found that the classical PNP widely adopted in the literature is not optimal for this damage model, since the resulting stiffness is not always of major symmetry. Consequently, a well-defined free energy potential does not exist in general cases and the model cannot be cast into the framework of thermodynamics with internal variables. Furthermore, the damage induced anisotropy cannot be captured, exhibiting excessive lateral deformationsunder uniaxial tension. To overcome the above issues, a novel PNP, variationally interpreted as the closest point projection of the effective stress in energy norm, is proposed with closed-form solution. With the novel PNP, the secant stiffness tensorof the proposed unilateral damage model always possesses major symmetry and exhibits orthotropic behavior under uniaxial tension and mixed tension/compression. The corresponding thermodynamics framework is then given, resulting in an energy release rate based rounded-Rankine type damage criterion appropriate for tensile failure in quasi-brittle solids. Several numerical examples of single-point verifications and benchmark tests are presented. It is demonstrated that the proposed model is capable of characterizing localized failureof concrete under proportional and non-proportional static loading, as well as the MCR effects under seismic cyclic loading.
Abstract
The asymmetric tensile/compressive material behavior and microcracks closure-reopening (MCR) effects exhibited by quasi-brittle solids are of significant [...]
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Cracking of quasi-brittle structures under monotonic and cyclic loadings: A d+/d− damage model with stiffness recovery in shear
M. Cervera, C. Tesei, G. Ventura

Int. J. Solids and Structures (2017). (preprint) Vol. 135, pp. 148–171

Abstract
In the present paper, a new d+/d− damage model apt for quasi-brittle materials is described and its validation is carried out considering unreinforced concrete, reinforced concrete and masonry elements. Two independent scalar damage variables, d+ and d−, in combination with the split of the reversible strain tensor into its positive and negative counterparts, are adopted in order to simulate the pronounced dissimilar response under tension and compression, typical of these materials. An energy-equivalent framework is considered for representing the orthotropy induced in the material by the degradation process, with the consequence that a thermodynamically consistent constitutive operator, positive definite, symmetric and strain-driven, is derived. In addition to the degradation parameters, the permanent strain tensor is also contemplated by the model and a modification of the exponential softening modulus is proposed in order to treat the evolution of the two causes of dissipation, damage and irreversible deformations, in a coupled way. The formulation is integrated with a multidirectional damage procedure, addressed to extend the microcrack closure-reopening (MCR) capabilities of the model to shear cyclic conditions, characterized by orthogonal (or however intersecting) sets of cracks. Maintaining unaltered the dependence of the constitutive law from two scalar indeces, d+ and d−, this approach activates or deactivates a tensile(compressive) damage value on the base of the current maximum (minimum) principal strain direction. In correspondence with damage activation (crack opening) or deactivation (crack closure), a smooth transition is introduced, in order to avoid abrupt changes in stiffness and enhance the numerical performance and robustness of the multidirectional procedure. The adequacy of the proposed constitutive model in reproducing experimental results has been proven for both monotonic and cyclic loading conditions. The two examples of application involving cyclic loads, dominated by shear, constitute a validation of the multidirectional damage approach, showing how the suitable representation of unilateral effects and permanent deformations is essential to model the observed structural response in terms of maximum resistance, evolution of stiffness degradation and dissipation capacity.
Abstract
In the present paper, a new d+/d− damage model apt for quasi-brittle materials is described and its validation is carried out considering unreinforced [...]
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Experimental validation of a FSW model with an enhanced friction model: application to a threaded cylindrical pin tool
N. Dialami, M. Cervera, M. Chiumenti, A. Segatori, W. Osikowicz

Metals (2017). (preprint) Vol. 7 (11), pp. 491

Abstract
This work adopts a fast and accurate two-stage computational strategy for the analysis of FSW (Friction stir welding) processes using threaded cylindrical pin tools. The coupled thermo-mechanical problem is equipped with an enhanced friction model to include the effect of non-uniform pressure distribution under the pin shoulder. The overall numerical strategy is successfully validated by the experimental measurements provided by the industrial partner (Sapa). The verification of the numerical model using the experimental evidence is not only accomplished in terms of temperature evolution but also in terms of torque, longitudinal, transversal and vertical forces.
Abstract
This work adopts a fast and accurate two-stage computational strategy for the analysis of FSW (Friction stir welding) processes using threaded cylindrical pin tools. The coupled [...]
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Enhanced friction model for Friction Stir Welding (FSW) analysis: Simulation and experimental validation
N. Dialami, M. Chiumenti, M. Cervera, A. Segatori, W. Osikowicz

Int. J. Mechanical Sciences (2017). (preprint) Vol. 133, pp. 555-567

Abstract
Friction is one of the main heat generation mechanisms in Friction Stir Welding (FSW). This phenomenon occurs between the pin and the workpiece as the rotating tool moves along the weld line. An accurate friction model is essential for obtaining realistic results in a FSW simulation in particular temperature, forces and torque. In this work, a modified Norton's friction law is developed. The suggested enhanced friction model aims at providing not only the realistic temperature field but also the forces and torque. This model does not exclusively relate the frictional shear stress to the sliding velocity; conversely it takes into account the effect of non-uniform pressure distribution under the shoulder, as this latter has an important role in the process of heat generation. Longitudinal, transversal and vertical forces and torque are numerically calculated. The effect of the enhanced friction model is reflected in these forces. In particular, it leads to a more realistic estimation of the transversal and longitudinal forces in comparison with the results obtained using former models. The friction model is successfully validated by the experimental measurements provided by the industrial partner (Sapa). The experimental analysis is performed for the material characterization, the calibration of the friction model and, more generally, the assessment of the overall numerical strategy proposed for the FSW simulation.
Abstract
Friction is one of the main heat generation mechanisms in Friction Stir Welding (FSW). This phenomenon occurs between the pin and the workpiece as the rotating tool moves [...]
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Numerical modelling and experimental validation in Selective Laser Melting
M. Chiumenti, E. Neiva, E. Salsi, M. Cervera, E. Badia, J. Moya, Z. Chen, C. Lee, C. Davies

Additive Manufacturing (2017). (preprint) Vol. 18, pp. 171-185

Abstract
In this work a finite-element framework for the numerical simulation of the heat transfer analysis of additive manufacturing processes by powder-bed technologies, such as Selective Laser Melting, is presented. These kind of technologies allow for a layer-by-layer metal deposition process to cost-effectively create, directly from a CAD model, complex functional parts such as turbine blades, fuel injectors, heat exchangers, medical implants, among others. The numerical model proposed accounts for different heat dissipation mechanisms through the surrounding environment and is supplemented by a finite-element activation strategy, based on the born-dead elements technique, to follow the growth of the geometry driven by the metal deposition process, in such a way that the same scanning pattern sent to the numerical control system of the AM machine is used. An experimental campaign has been carried out at the Monash Centre for Additive Manufacturing using an EOSINT-M280 machine where it was possible to fabricate different benchmark geometries, as well as to record the temperature measurements at different thermocouple locations. The experiment consisted in the simultaneous printing of two walls with a total deposition volume of 107 cm3 in 992 layers and about 33,500 s build time. A large number of numerical simulations have been carried out to calibrate the thermal FE framework in terms of the thermophysical properties of both solid and powder materials and suitable boundary conditions. Furthermore, the large size of the experiment motivated the investigation of two different model reduction strategies: exclusion of the powder-bed from the computational domain and simplified scanning strategies. All these methods are analysed in terms of accuracy, computational effort and suitable applications
Abstract
In this work a finite-element framework for the numerical simulation of the heat transfer analysis of additive manufacturing processes by powder-bed technologies, [...]
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Finite element modeling of quasi-brittle cracks in 2D and 3D with enhanced strain accuracy
M. Cervera, G. Barbat, M. Chiumenti

Computational Mechanics (2017). (preprint) Vol. 60 (5), pp. 767–796

Abstract
This paper discusses the finite element modeling of cracking in quasi-brittle materials. The problem is addressed via a mixed strain/displacement finite element formulation and an isotropic damage constitutive model. The proposed mixed formulation is fully general and is applied in 2D and 3D. Also, it is independent of the specific finite element discretization considered; it can be equally used with triangles/tetrahedra, quadrilaterals/hexahedra and prisms. The feasibility and accuracy of the method is assessed through extensive comparison with experimental evidence. The correlation with the experimental tests shows the capacity of the mixed formulation to reproduce the experimental crack path and the force–displacement curves with remarkable accuracy. Both 2D and 3D examples produce results consistent with the documented data. Aspects related to the discrete solution, such as convergence regarding mesh resolution and mesh bias, as well as other related to the physical model, like structural size effect and the influence of Poisson’s ratio, are also investigated. The enhanced accuracy of the computed strain field leads to accurate results in terms of crack paths, failure mechanisms and force displacement curves. Spurious mesh dependency suffered by both continuous and discontinuous irreducible formulations is avoided by the mixed FE, without the need of auxiliary tracking techniques or other computational schemes that alter the continuum mechanical problem.
Abstract
This paper discusses the finite element modeling of cracking in quasi-brittle materials. The problem is addressed via a mixed strain/displacement finite element formulation [...]
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Articles (Documents not available in Scipedia)

3D numerical modelling of twisting cracks under bending and torsion of skew notched beams
L Benedetti, M Cervera, M Chiumenti

Engineering Fracture Mechanics 176, 235-256, 2017
Numerical simulation and experimental calibration of Additive Manufacturing by blown powder technology. Part I: thermal analysis
M Chiumenti, X Lin, M Cervera, W Lei, Y Zheng, W Huang

Rapid Prototyping Journal 23 (2), 2017
Local-global strategy for the prediction of residual stresses in FSW processes
N Dialami, M Cervera, M Chiumenti, CA de Saracibar

International Journal of Advanced Manufacturing Technology 88 (9), 3099–3111, 2017
A fast and accurate two-stage strategy to evaluate the effect of the pin tool profile on metal flow, torque and forces in friction stir welding
N Dialami, M Cervera, M Chiumenti, CA de Saracibar

International Journal of Mechanical Sciences 122, 215–227, 2017
Finite Element Modelling of Internal and Multiple Localized Cracks
S Saloustros, L Pelà, M Cervera, P Roca

Computational Mechanics 59 (2), 299–316, 2017
Modelling of Bingham and Herschel–Bulkley flows with mixed P1/P1 finite elements stabilized with orthogonal subgrid scale
E Moreno, A Larese, M Cervera

Journal of Non-Newtonian Fluid Mechanics 228, 1-16, 2016
Thermodynamically consistent plastic-damage framework for localized failure in quasi-brittle solids: material model and strain localization analysis
JY Wu, M Cervera

Journal of Solids and Structures 87, 227-247, 2016
Numerical modeling of the electron beam welding and its experimental validation
M Chiumenti, M Cervera, N Dialami, B Wu, L Jinwei, CA de Saracibar

Finite Elements in Analysis and Design 121, 118-133, 2016
Analysis of the effect of provisional ties on the construction and current deformation of Mallorca Cathedral
L Pelà, J Bourgeois, P Roca, M Cervera, M Chiumenti

International Journal of Architectural Heritage 10 (4), 418-437, 2016
Challenges in thermo-mechanical analysis of Friction Stir Welding processes
N Dialami, M Chiumenti, M Cervera, C Agelet de Saracibar

Archives of Computational Methods in Engineering, 1-37, 2016
3D numerical models using a fluid or a solid formulation of FSW processes with a non-cylindrical pin
P Bussetta, N Dialami, M Chiumenti, CA de Saracibar, M Cervera, ...

Advanced Modeling and Simulation in Engineering Sciences 2 (27), 1-19, 2015
A crack-tracking technique for localized cohesive–frictional damage
S Saloustros, L Pelà, M Cervera

Engineering Fracture Mechanics 150, 96-114, 2015
On the conformity of strong, regularized, embedded and smeared discontinuity approaches for the modeling of localized failure in solids
M Cervera, JY Wu

Journal of Solids and Structures 71, 19-38, 2015
On the equivalence between traction- and stress-based approaches for the modeling of localized failure in solids
JY Wu, M Cervera

Journal of the Mechanics and Physics of Solids 82, 137-163, 2015
Explicit mixed strain-displacement finite element for dynamic geometrically non-linear solid mechanics
NM Lafontaine, R Rossi, M Cervera, M Chiumenti

Computational Mechanics 55, 543-559, 2015
A mixed three-field FE formulation for stress accurate analysis including the incompressible limit
M Chiumenti, M Cervera, R Codina

Computer Methods in Applied Mechanics and Engineering 283, 1095–1116, 2015
Stress-accurate Mixed FEM for soil failure under shallow foundations involving strain localization in plasticity
L Benedetti, M Cervera, M Chiumenti

Computers and Geotechnics 64, 32-47, 2015
Material flow visualization in Friction Stir Welding via particle tracing
N Dialami, M Chiumenti, M Cervera, CA de Saracibar, JP Ponthot

International Journal of Material Forming 8 (2), 167-181, 2015
Mixed Stabilized Finite Element Methods in Nonlinear Solid Mechanics. Part III: Compressible and incompressible plasticity
M Cervera, M Chiumenti, L Benedetti, R Codina

Computer Methods in Applied Mechanics and Engineering 285, 752-775, 2015
Shaped metal deposition processes
C Agelet de Saracibar, A Lundbäck, M Chiumenti, M Cervera

Encyclopedia of Thermal Stresses, Springer, 2014
Numerical simulation and visualization of material flow in friction stir welding via particle tracing
N Dialami, M Chiumenti, M Cervera, CA de Saracibar, JP Ponthot, ...

Numerical Simulations of Coupled Problems in Engineering, 157-169, 2014
A localized mapped damage model for orthotropic materials
L Pelà, M Cervera, S Oller, M Chiumenti

Engineering Fracture Mechanics 124, 196–216, 2014
Computational modeling and sub-grid scale stabilization of incompressibility and convection in the numerical simulation of friction stir welding processes
CA de Saracibar, M Chiumenti, M Cervera, N Dialami, A Seret

Archives of Computational Methods in Engineering 21, 3-37, 2014
A novel stress-accurate FE technology for highly non-linear analysis with incompressibility constraint. Application to the numerical simulation of the FSW process
M Chiumenti, M Cervera, C Agelet de Saracibar, N Dialami

AIP conference proceedings 1532 (1), 45-56, 2013
Comparison of a Fluid and a Solid Approach for the Numerical Simulation of Friction Stir Welding with a Non‐Cylindrical Pin
P Bussetta, N Dialami, R Boman, M Chiumenti, C Agelet de Saracibar, ...

Steel Research International 85, 968–979, 2013
An apropos kinematic framework for the numerical modeling of friction stir welding
N Dialami, M Chiumenti, M Cervera, CA de Saracibar

Computers & Structures 117, 48-57, 2013
Continuum FE models for the analysis of Mallorca Cathedral
P Roca, M Cervera, L Pelà, R Clemente, M Chiumenti

Engineering Structures 46, 653-670, 2013
An orthotropic damage model for the analysis of masonry structures
L Pelà, M Cervera, P Roca

Construction and Building Materials 41 (2013) 957–967, 2013
Numerical modeling of friction stir welding processes
M Chiumenti, M Cervera, C Agelet de Saracibar, N Dialami

Computer Methods in Applied Mechanics and Engineering, 254 (2013) 353–369, 2013
Viscoelasticity and damage model for creep behaviour of historical masonry structures
P Roca, M Cervera, L Pelà, R Clemente, M Chiumenti

The Open Civil Engineering Journal, 6 (Suppl 1-M7), 188-199, 2012
Benchmarking on bifurcation and localization in J2 plasticity for plane stress and plane strain conditions
M Cervera, M Chiumenti, D Di Capua

Computer Methods in Applied Mechanics and Engineering 241, 206-224, 2012
Advances in the numerical simulation of 3D FSW processes
CA de Saracibar, M Chiumenti, M Cervera, N Dialami, D Santiago, ...

on the Proceedings of the International Symposium on Plasticity and its …, 2011
Mesh objective modeling of cracks using continuous linear strain and displacement interpolations
M Cervera, M Chiumenti, R Codina

International Journal for Numerical Methods in Engineering 87 (10), 962-987, 2011
Continuum damage model for orthotropic materials: Application to masonry
L Pelà, M Cervera, P Roca

Computer Methods in Applied Mechanics and Engineering 200 (9-12), 917-930, 2011
A computational model for the numerical simulation of FSW processes
C Agelet de Saracibar, M Chiumenti, D Santiago, M Cervera, N Dialami, ...

AIP Conference Proceedings 1252 (1), 81-88, 2010
A crack-tracking technique for localized damage in quasi-brittle materials
M Cervera, L Pelà, R Clemente, P Roca

Engineering Fracture Mechanics 77 (13), 2431-2450, 2010
Finite element modeling of multi-pass welding and shaped metal deposition processes
M Chiumenti, M Cervera, A Salmi, CA De Saracibar, N Dialami, K Matsui

Computer methods in applied mechanics and engineering 199 (37-40), 2343-2359, 2010
Mixed stabilized finite element methods in nonlinear solid mechanics: Part I: Formulation
M Cervera, M Chiumenti, R Codina

Computer Methods in Applied Mechanics and Engineering 199 (37-40), 2559-2570, 2010
Mixed stabilized finite element methods in nonlinear solid mechanics: Part II: Strain localization
M Cervera, M Chiumenti, R Codina

Computer Methods in Applied Mechanics and Engineering 199 (37), 2571-2589, 2010
Structural analysis of masonry historical constructions. Classical and advanced approaches
P Roca, M Cervera, G Gariup, L Pelà

Archives of Computational Methods in Engineering 17 (3), 299-325, 2010
Seismic safety analysis of historical masonry structures using a damage constitutive model
J Murcia-Delso, AK Das, M Roca, M Cervera

Thematic conference on computational methods in structural dynamics and …, 2009
Size effect and localization in J2 plasticity
M Cervera, M Chiumenti

International Journal of Solids and Structures 46 (17), 3301-3312, 2009
El modelo de daño localizado aplicado al análisis de estructuras de obra de fábrica
R Clemente, M Cervera Ruiz, P Roca Fabregat

Revista internacional de métodos numéricos para cálculo y diseño en …, 2008
On the numerical modeling of the thermomechanical contact for metal casting analysis
M Chiumenti, CA de Saracibar, M Cervera

Journal of Heat Transfer 130 (6), 061301, 2008
An orthotropic mesh corrected crack model
M Cervera

Computer Methods in Applied Mechanics and Engineering 197 (17-18), 1603-1619, 2008
A smeared‐embedded mesh‐corrected damage model for tensile cracking
M Cervera

International journal for numerical methods in engineering 76 (12), 1930-1954, 2008
Análisis estructural de edificios históricos mediante modelos localizados de fisuración
R Clemente, M Cervera, P Roca

Centro Internacional de Métodos Numéricos en Ingeniería, 2007
Damage model with crack localization–Application to historical buildings
R Clemente, P Roca, M Cervera

Structural Analysis of Historical Constructions, New Delhi, India, 2006
On the orthogonal subgrid scale pressure stabilization of finite deformation J2 plasticity
CA de Saracibar, M Chiumenti, Q Valverde, M Cervera

Computer Methods in Applied Mechanics and Engineering 195 (9-12), 1224-1251, 2006
Smeared crack approach: back to the original track
M Cervera, M Chiumenti

International journal for numerical and analytical methods in geomechanics …, 2006
Mesh objective tensile cracking via a local continuum damage model and a crack tracking technique
M Cervera, M Chiumenti

Computer methods in applied mechanics and engineering 196 (1-3), 304-320, 2006
Structural analysis of Küçük Ayasofya Mosque in Ístanbul
M Massanas, P Roca, M Cervera, G Arun

Structural Analysis of Historical Constructions IV, Padova, Italy, 2004
On the orthogonal subgrid scale pressure stabilization of small and finite deformation J2 plasticity
CA de Saracibar, M Chiumenti, Q Valverde, M Cervera

Monograph Series on Computational Methods in Forming Processes 2, 2004
Softening, localization and stabilization: capture of discontinuous solutions in J2 plasticity
M Cervera, M Chiumenti, C Agelet de Saracibar

International Journal for Numerical and Analytical Methods in Geomechanics …, 2004
Shear band localization via local J2 continuum damage mechanics
M Cervera, M Chiumenti, C Agelet de Saracibar

Computer methods in applied mechanics and engineering 193 (9), 849-880, 2004
Modeling material failure in concrete structures under cyclic actions
R Faria, J Oliver, M Cervera

Journal of Structural Engineering 130 (12), 1997-2005, 2004
El método de los elementos finitos
OC Zienkiewicz, RL Taylor, trad., G Bugeda, M Cervera, E Oñate

CIMNE, 2004
A stabilized formulation for incompressible plasticity using linear triangles and tetrahedra
M Chiumenti, Q Valverde, CA de Saracibar, M Cervera

International Journal of Plasticity 20 (8-9), 1487-1504, 2004
A Mixed Finite Element Formulation for Incompressibility Using Linear Displacement and Presure Interpolations
D Christ, M Cervera, M Chiumenti, CA de Saracibar

International Center for Numerical Methods in Engineering, 2003
Viscoelasticity and rate-dependent continuum damage models
M Cervera

CIMNE, Monography Nº-79, Technical University of Catalunya, Barcelona, Spain, 2003
Mixed linear/linear simplicial elements for incompressible elasticity and plasticity
M Cervera, M Chiumenti, Q Valverde, CA de Saracibar

Computer Methods in Applied Mechanics and Engineering 192 (49-50), 5249-5263, 2003
Una formulación estabilizada para plasticidad incompresible usando triangulos y tetraedros con interpolaciones lineales en desplazamientos y presiones
M Chiumenti, Q Valverde, C Agelet de Saracibar, M Cervera

Métodos Numéricos en Ingeniería V 94 (99), 100, 2002
Elementos estabilizados de bajo orden en mecánica de sólidos
QM Valverde Guzmán

Universitat Politècnica de Catalunya, 2002
COMET: COupled MEchanical and Thermal analysis-Data Input Manual Version 5.0
M Cervera, C Agelet de Saracibar, M Chiumenti

CIMNE, Technical report IT-308, 2002
Numerical modelling of concrete curing, regarding hydration and temperature phenomena
M Cervera, R Faria, J Oliver, T Prato

Computers & structures 80 (18-19), 1511-1521, 2002
A stabilized formulation for incompressible elasticity using linear displacement and pressure interpolations
M Chiumenti, Q Valverde, CA De Saracibar, M Cervera

Computer methods in applied mechanics and engineering 191 (46), 5253-5264, 2002
Simulación numérica del comportamiento termo-mecánico de presas de HCR Parte I: Modelización y calibración
M Cervera, J Oliver, T Prato, J García

Revista internacional de métodos numéricos para cálculo y diseño en …, 2001
On the constitutive modeling of coupled thermomechanical phase-change problems
CA de Saracibar, M Cervera, M Chiumenti

International Journal of Plasticity 17 (12), 1565-1622, 2001
Mecánica de estructuras
M Cervera, E Blanco

Edicions UPC, 2001
Simulation of construction of RCC dams. II: Stress and Damage
M Cervera, J Oliver, T Prato

Journal of structural Engineering 126 (9), 1062-1069, 2000
Simulation of construction of RCC dams. I: temperature and aging
M Cervera, J Oliver, T Prato

Journal of Structural Engineering 126 (9), 1053-1061, 2000
Localización de deformaciones: análisis y simulación numérica de discontinuidades en mecánica de sólidos
OL Manzoli, J Oliver, M Cervera

Centro Internacional de Métodos Numéricos en Ingeniería, 1999
Thermo-mechanical analysis of industrial solidification processes
M Cervera, C Agelet De Saracibar, M Chiumenti

International Journal for Numerical Methods in Engineering 46 (9), 1575-1591, 1999
Thermo-chemo-mechanical model for concrete. II: Damage and creep
M Cervera, J Oliver, T Prato

Journal of engineering mechanics 125 (9), 1028-1039, 1999
On the formulation of coupled thermoplastic problems with phase-change
CA De Saracibar, M Cervera, M Chiumenti

International journal of plasticity 15 (1), 1-34, 1999
Thermo-chemo-mechanical model for concrete. I: Hydration and aging
M Cervera, J Oliver, T Prato

Journal of engineering mechanics 125 (9), 1018-1027, 1999
Numerical prediction of temperature and density distributions in selective laser sintering processes
G Bugeda, M Cervera, G Lombera

Rapid Prototyping Journal 5 (1), 21-26, 1999
Strong discontinuities and continuum plasticity models: the strong discontinuity approach
J Oliver, M Cervera, O Manzoli

International journal of plasticity 15 (3), 319-351, 1999
Failure pressure evaluation of the containment building of a large dry nuclear power plant
AH Barbat, M Cervera, A Hanganu, C Cirauqui, E Onate

Nuclear engineering and design 180 (3), 251-270, 1998
On the use of strain-softening models for the simulation of strong discontinuities in solids
J Oliver, M Cervera, O Manzoli

Material Instabilities in Solids 8, 107-123, 1998
A strain-based plastic viscous-damage model for massive concrete structures
R Faria, J Oliver, M Cervera

International journal of solids and structures 35 (14), 1533-1558, 1998
Simulación numérica del proceso de hidratación del hormigón
T Prato, M Cervera, X Oliver

Centro Internacional de Métodos Numéricos en Ingeniería, 1997
Block-iterative algorithms for nonlinear coupled problems.
M Cervera, R Codina

CIMNE, 1996
On the computational efficiency and implementation of block-iterative algorithms for nonlinear coupled problems
M Cervera, R Codina, M Galindo

Engineering computations 13 (6), 4-30, 1996
A rate-dependent isotropic damage model for the seismic analysis of concrete dams
M Cervera, J Oliver, O Manzoli

Earthquake engineering & structural dynamics 25 (9), 987-1010, 1996
Evaluación de la presión de fallo del edificio de contención de una central nuclear tipo PWR-W tres lazos. Parte 1: Metodología
M Cervera, ÁH Barbat, Á Hanganu, E Oñate, C Cirauqui

Revista internacional de métodos numéricos para cálculo y diseño en …, 1995
Evaluación de la presión de fallo del edificio de contención de una central nuclear tipo PWR-W tres lazos. Parte II: Simulación numérica
HA Barbat, M Cervera, C Cirauqui, Á Hanganu, E Oñate

Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, 1995
Numerical analysis of stereolithography processes using the finite element method
G Bugeda, M Cervera, G Lombera, E Onate

Rapid Prototyping Journal 1 (2), 13-23, 1995
Seismic evaluation of concrete dams via continuum damage models
M Cervera, J Oliver, R Faria

Earthquake engineering & structural dynamics 24 (9), 1225-1245, 1995
A finite volume format for structural mechanics
E Onate, M Cervera, OC Zienkiewicz

International journal for numerical methods in engineering 37 (2), 181-201, 1994
A penalty finite element method for non‐Newtonian creeping flows
R Codina, M Cervera, E Oñate

International journal for numerical methods in engineering 36 (8), 1395-1412, 1993
Derivation of thin plate bending elements with one degree of freedom per node: a simple three node triangle
E Oñate, M Cervera

Engineering Computations 10 (6), 543-561, 1993
Efficient solution schemes for fluid-structure-soil interaction problems
M Galindo, M Cervera, J Oliver

Tenth World Conf. on Earthq. Eng, 4651-4656, 1992
A finite volume format for structural mechanics
E Oñate, OC Zienkiewicz, M Cervera

Centro Internacional de Métodos Numéricos en Ingeniería, 1992
The intrinsic time for the streamline upwind/Petrov-Galerkin formulation using quadratic elements
R Codina, E Oñate, M Cervera

Computer Methods in Applied Mechanics and Engineering 94 (2), 239-262, 1992
A computational model for progressive cracking in large dams due to the swelling of concrete
M Cervera, J Oliver, E Herrero, E Onate

Engineering Fracture Mechanics 35 (1), 573-585, 1990
Isotropic damage models and smeared crack analysis of concrete
J Oliver, M Cervera, S Oller, J Lubliner

II Int. conference on computer aided analysis and design of concrete …, 1990
Nonlinear Transient Dynamic Analysis of 3-D Structures-A Finite Element Program for steel and reinforced concrete materials
M Cervera, E Hinton, J Bonet, N Bicanic

Numerical Methods and Software For Dynamic Analysis Of Plates and Shells …, 1988
Nonlinear analysis of reinforced concrete plate and shell structures using 20-noded isoparametric brick elements
M Cervera, E Hinton, O Hassan

Computers & structures 25 (6), 845-869, 1987
Nonlinear analysis of reinforced concrete structures using three dimensional and shell finite element models.
M Cervera

University College of Swansea, 1986

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Articles (Documents not available in Scipedia)

3D numerical modelling of twisting cracks under bending and torsion of skew notched beams

Numerical simulation and experimental calibration of Additive Manufacturing by blown powder technology. Part I: thermal analysis

Local-global strategy for the prediction of residual stresses in FSW processes

A fast and accurate two-stage strategy to evaluate the effect of the pin tool profile on metal flow, torque and forces in friction stir welding

Finite Element Modelling of Internal and Multiple Localized Cracks

Modelling of Bingham and Herschel–Bulkley flows with mixed P1/P1 finite elements stabilized with orthogonal subgrid scale

Thermodynamically consistent plastic-damage framework for localized failure in quasi-brittle solids: material model and strain localization analysis

Numerical modeling of the electron beam welding and its experimental validation

Analysis of the effect of provisional ties on the construction and current deformation of Mallorca Cathedral

Challenges in thermo-mechanical analysis of Friction Stir Welding processes

3D numerical models using a fluid or a solid formulation of FSW processes with a non-cylindrical pin

A crack-tracking technique for localized cohesive–frictional damage

On the conformity of strong, regularized, embedded and smeared discontinuity approaches for the modeling of localized failure in solids

On the equivalence between traction- and stress-based approaches for the modeling of localized failure in solids

Explicit mixed strain-displacement finite element for dynamic geometrically non-linear solid mechanics

A mixed three-field FE formulation for stress accurate analysis including the incompressible limit

Stress-accurate Mixed FEM for soil failure under shallow foundations involving strain localization in plasticity

Material flow visualization in Friction Stir Welding via particle tracing

Mixed Stabilized Finite Element Methods in Nonlinear Solid Mechanics. Part III: Compressible and incompressible plasticity

Shaped metal deposition processes

Numerical simulation and visualization of material flow in friction stir welding via particle tracing

A localized mapped damage model for orthotropic materials

Computational modeling and sub-grid scale stabilization of incompressibility and convection in the numerical simulation of friction stir welding processes

A novel stress-accurate FE technology for highly non-linear analysis with incompressibility constraint. Application to the numerical simulation of the FSW process

Comparison of a Fluid and a Solid Approach for the Numerical Simulation of Friction Stir Welding with a Non‐Cylindrical Pin

An apropos kinematic framework for the numerical modeling of friction stir welding

Continuum FE models for the analysis of Mallorca Cathedral

An orthotropic damage model for the analysis of masonry structures

Numerical modeling of friction stir welding processes

Viscoelasticity and damage model for creep behaviour of historical masonry structures

Benchmarking on bifurcation and localization in J2 plasticity for plane stress and plane strain conditions

Advances in the numerical simulation of 3D FSW processes

Mesh objective modeling of cracks using continuous linear strain and displacement interpolations

Continuum damage model for orthotropic materials: Application to masonry

A computational model for the numerical simulation of FSW processes

A crack-tracking technique for localized damage in quasi-brittle materials

Finite element modeling of multi-pass welding and shaped metal deposition processes

Mixed stabilized finite element methods in nonlinear solid mechanics: Part I: Formulation

Mixed stabilized finite element methods in nonlinear solid mechanics: Part II: Strain localization

Structural analysis of masonry historical constructions. Classical and advanced approaches

Seismic safety analysis of historical masonry structures using a damage constitutive model

Size effect and localization in J2 plasticity

El modelo de daño localizado aplicado al análisis de estructuras de obra de fábrica

On the numerical modeling of the thermomechanical contact for metal casting analysis

An orthotropic mesh corrected crack model

A smeared‐embedded mesh‐corrected damage model for tensile cracking

Análisis estructural de edificios históricos mediante modelos localizados de fisuración

Damage model with crack localization–Application to historical buildings

On the orthogonal subgrid scale pressure stabilization of finite deformation J2 plasticity

Smeared crack approach: back to the original track

Mesh objective tensile cracking via a local continuum damage model and a crack tracking technique

Structural analysis of Küçük Ayasofya Mosque in Ístanbul

On the orthogonal subgrid scale pressure stabilization of small and finite deformation J2 plasticity

Softening, localization and stabilization: capture of discontinuous solutions in J2 plasticity

Shear band localization via local J2 continuum damage mechanics

Modeling material failure in concrete structures under cyclic actions

El método de los elementos finitos

A stabilized formulation for incompressible plasticity using linear triangles and tetrahedra

A Mixed Finite Element Formulation for Incompressibility Using Linear Displacement and Presure Interpolations

Viscoelasticity and rate-dependent continuum damage models

Mixed linear/linear simplicial elements for incompressible elasticity and plasticity

Una formulación estabilizada para plasticidad incompresible usando triangulos y tetraedros con interpolaciones lineales en desplazamientos y presiones

Elementos estabilizados de bajo orden en mecánica de sólidos

COMET: COupled MEchanical and Thermal analysis-Data Input Manual Version 5.0

Numerical modelling of concrete curing, regarding hydration and temperature phenomena

A stabilized formulation for incompressible elasticity using linear displacement and pressure interpolations

Simulación numérica del comportamiento termo-mecánico de presas de HCR Parte I: Modelización y calibración

On the constitutive modeling of coupled thermomechanical phase-change problems

Mecánica de estructuras

Simulation of construction of RCC dams. II: Stress and Damage

Simulation of construction of RCC dams. I: temperature and aging

Localización de deformaciones: análisis y simulación numérica de discontinuidades en mecánica de sólidos

Thermo-mechanical analysis of industrial solidification processes

Thermo-chemo-mechanical model for concrete. II: Damage and creep

On the formulation of coupled thermoplastic problems with phase-change

Thermo-chemo-mechanical model for concrete. I: Hydration and aging

Numerical prediction of temperature and density distributions in selective laser sintering processes