Kristoffersen et al 2018a - Revision history

Scipediacontent at 22:03, 1 February 2021

2021-02-01T22:03:25Z

Scipediacontent: Scipediacontent moved page Draft Content 967581700 to Kristoffersen et al 2018a

2021-01-21T14:10:39Z

Scipediacontent moved page Draft Content 967581700 to Kristoffersen et al 2018a

Scipediacontent: Created page with " == Abstract == In areas frequented by fishing vessels, trawl equipment or anchors may interfere with pipelines and cause damage through impact, potential hooking, and ensuin..."

2021-01-21T14:10:36Z

Created page with " == Abstract == In areas frequented by fishing vessels, trawl equipment or anchors may interfere with pipelines and cause damage through impact, potential hooking, and ensuin..."

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== Abstract ==

In areas frequented by fishing vessels, trawl equipment or anchors may interfere with pipelines and cause damage through impact, potential hooking, and ensuing release of the pipeline. This load sequence of denting followed by global bending and springback results in a complex stress and strain history. Experiments have shown that fracture in an impacted pipe typically arises along the bottom of the dent, where the material suffers high compressive strains in the impact and hooking phase, and a rapid change to tension during the rebound phase. High compressive strains may reduce the strain to failure significantly for a succeeding tensile phase. A common trait of ductile damage models is to account for damage through nucleation, growth and coalescence of voids, which traditionally is thought to occur during tension. In this study, an uncoupled phenomenological Cockcroft-Latham-type fracture model accounting for anisotropic damage is used. The fracture model is implemented in the explicit finite element programme IMPETUS Afea Solver, and calibrated using material tests. Simulations show that the proposed fracture model is able to account for the observed behaviour. Copyright Â© 2018 by ASME

== Original document ==

The different versions of the original document can be found in:

* [http://hdl.handle.net/11250/2584835 http://hdl.handle.net/11250/2584835]

* [https://ntnuopen.ntnu.no/ntnu-xmlui/bitstream/11250/2584835/2/OMAE2018-77964.pdf https://ntnuopen.ntnu.no/ntnu-xmlui/bitstream/11250/2584835/2/OMAE2018-77964.pdf]

* [http://asmedigitalcollection.asme.org/OMAE/proceedings-pdf/doi/10.1115/OMAE2018-77964/2535545/v003t02a013-omae2018-77964.pdf http://asmedigitalcollection.asme.org/OMAE/proceedings-pdf/doi/10.1115/OMAE2018-77964/2535545/v003t02a013-omae2018-77964.pdf],
: [http://dx.doi.org/10.1115/omae2018-77964 http://dx.doi.org/10.1115/omae2018-77964]

* [https://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=2703675 https://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=2703675],
: [https://asmedigitalcollection.asme.org/OMAE/proceedings/OMAE2018/51227/V003T02A013/277290 https://asmedigitalcollection.asme.org/OMAE/proceedings/OMAE2018/51227/V003T02A013/277290],
: [https://brage.bibsys.no/xmlui/handle/11250/2584835 https://brage.bibsys.no/xmlui/handle/11250/2584835],
: [https://ntnuopen.ntnu.no/ntnu-xmlui/handle/11250/2584835 https://ntnuopen.ntnu.no/ntnu-xmlui/handle/11250/2584835],
: [https://heattransfer.asmedigitalcollection.asme.org/OMAE/proceedings/OMAE2018/51227/V003T02A013/277290 https://heattransfer.asmedigitalcollection.asme.org/OMAE/proceedings/OMAE2018/51227/V003T02A013/277290],
: [https://mechanicaldesign.asmedigitalcollection.asme.org/OMAE/proceedings-pdf/OMAE2018/51227/V003T02A013/2535545/v003t02a013-omae2018-77964.pdf https://mechanicaldesign.asmedigitalcollection.asme.org/OMAE/proceedings-pdf/OMAE2018/51227/V003T02A013/2535545/v003t02a013-omae2018-77964.pdf],
: [https://academic.microsoft.com/#/detail/2893650179 https://academic.microsoft.com/#/detail/2893650179]

← Older revision		Revision as of 22:03, 1 February 2021
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	== Abstract ==		== Abstract ==

−	In areas frequented by fishing vessels, trawl equipment or anchors may interfere with pipelines and cause damage through impact, potential hooking, and ensuing release of the pipeline. This load sequence of denting followed by global bending and springback results in a complex stress and strain history. Experiments have shown that fracture in an impacted pipe typically arises along the bottom of the dent, where the material suffers high compressive strains in the impact and hooking phase, and a rapid change to tension during the rebound phase. High compressive strains may reduce the strain to failure significantly for a succeeding tensile phase. A common trait of ductile damage models is to account for damage through nucleation, growth and coalescence of voids, which traditionally is thought to occur during tension. In this study, an uncoupled phenomenological Cockcroft-Latham-type fracture model accounting for anisotropic damage is used. The fracture model is implemented in the explicit finite element programme IMPETUS Afea Solver, and calibrated using material tests. Simulations show that the proposed fracture model is able to account for the observed behaviour. Copyright Â© 2018 by ASME	+	In areas frequented by fishing vessels, trawl equipment or anchors may interfere with pipelines and cause damage through impact, potential hooking, and ensuing release of the pipeline. This load sequence of denting followed by global bending and springback results in a complex stress and strain history. Experiments have shown that fracture in an impacted pipe typically arises along the bottom of the dent, where the material suffers high compressive strains in the impact and hooking phase, and a rapid change to tension during the rebound phase. High compressive strains may reduce the strain to failure significantly for a succeeding tensile phase. A common trait of ductile damage models is to account for damage through nucleation, growth and coalescence of voids, which traditionally is thought to occur during tension. In this study, an uncoupled phenomenological Cockcroft-Latham-type fracture model accounting for anisotropic damage is used. The fracture model is implemented in the explicit finite element programme IMPETUS Afea Solver, and calibrated using material tests. Simulations show that the proposed fracture model is able to account for the observed behaviour. Copyright © 2018 by ASME

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