Abstract

This paper describes the process undertaken to analyze numerically the vibrational behavior of the moving assembly of a dynamic loudspeaker with double bottom suspension and in the absence of the above one using the finite element method (FEM). The study focuses on the low frequency [...]

Abstract

The class of physical problems of metal structures subject to rapid, large amplitude loads, such as occurs when they are submitted to an explosion blast, involves large deformations and inelastic action. Current state of art in explicit dynamic Finite Element Analysis codes require [...]

Abstract

Within the category of improvised explosive devices are those that form explosively formed projectiles which penetrate armor and armored systems, such as those used by insurgents against allied forces in operational areas. The purpose of this study is to reproduce and understand [...]

Abstract

This paper presents a three dimensional computational model to simulate the mechanical behavior of the muscle-tendon unit (MTU). The model has been formulated through a strain energy density function for hyperelastic materials incorporating both the passive and active behavior of [...]

Abstract

We present a novel fully explicit time integration method that remains stable for large time steps, requires neither matrix inversions nor solving a system of equations and therefore allows for nearly effort-less parallelization. In this first paper the proposed approach is applied [...]

Abstract

In this paper we propose a mortar algorithm for the study of contact mechanics in three dimensional elasticity problems. The projection surface used for integrating the equations is selected through a local cartesiana base defined in each contact element. In this way, some difficulties [...]

Abstract

Civil engineering constructions like pedestrian footbridges are structures increasingly slender, ambitious and complex in which the dynamic effects caused by the loads to which they are subjected (pedestrians) may induce service problems and / or significant or repetitive amplifications [...]

Abstract

The present work has as main objective to perform elastic-linear analyzes through a computational program with numerical approach of the strut-and-tie model using a formulation based on the Finite Element Method (FEM). In this model, it is possible to analyze the behavior of structural [...]

Abstract

The tool setting process of a rotary draw-bending process is very complex. Only experienced machine operators know which settings lead to a good result in relation to the bending task. Up to seven individual tools can be installed, positioned and set in the process independently. [...]

Abstract

We present the design of a high-resolution Petrov–Galerkin (HRPG) method using linear finite elements
for the problem defined by the residual

R (phi):= partial phi /partial t + u partial [...]