Improving force resultant model for anchors in clays from large deformation finite element analysis

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Abstract

This paper presents an improved plasticity force-resultant model for anchors deeply embedded in clays, developed from large deformation finite element analyses. The current available force-resultant models for anchors are mainly developed from small strain finite element analysis while experimental approach has not been used due to technical challenges. The advantage of large deformation finite element analysis is that it provides much more data points to fit the yield surface than small strain finite element analysis, in addition to avoiding excess mesh distortion problems. Furthermore, the flow rule or normality can be effectively checked in the large deformation finite element analysis and further used to improve the fitting quality. After validated against retrospective simulations, the better performance of the developed plasticity force-resultant model is demonstrated by comparing with available experimental observations from centrifuge test.

Original languageEnglish
JournalMarine Georesources and Geotechnology
DOIs
Publication statusE-pub ahead of print - 8 Feb 2019

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Anchors
anchor
Clay
Finite element method
clay
Plasticity
plasticity
Centrifuges
centrifuge
analysis
simulation

Cite this

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title = "Improving force resultant model for anchors in clays from large deformation finite element analysis",
abstract = "This paper presents an improved plasticity force-resultant model for anchors deeply embedded in clays, developed from large deformation finite element analyses. The current available force-resultant models for anchors are mainly developed from small strain finite element analysis while experimental approach has not been used due to technical challenges. The advantage of large deformation finite element analysis is that it provides much more data points to fit the yield surface than small strain finite element analysis, in addition to avoiding excess mesh distortion problems. Furthermore, the flow rule or normality can be effectively checked in the large deformation finite element analysis and further used to improve the fitting quality. After validated against retrospective simulations, the better performance of the developed plasticity force-resultant model is demonstrated by comparing with available experimental observations from centrifuge test.",
keywords = "associated flow rule, large deformation finite element analysis, Plasticity force-resultant model, plate anchor, yield surface",
author = "Yinghui Tian and Cassidy, {Mark J.} and Christophe Gaudin and Maozhu Peng",
year = "2019",
month = "2",
day = "8",
doi = "10.1080/1064119X.2018.1545813",
language = "English",
journal = "Marine Georesources and Geotechnology",
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AU - Tian, Yinghui

AU - Cassidy, Mark J.

AU - Gaudin, Christophe

AU - Peng, Maozhu

PY - 2019/2/8

Y1 - 2019/2/8

N2 - This paper presents an improved plasticity force-resultant model for anchors deeply embedded in clays, developed from large deformation finite element analyses. The current available force-resultant models for anchors are mainly developed from small strain finite element analysis while experimental approach has not been used due to technical challenges. The advantage of large deformation finite element analysis is that it provides much more data points to fit the yield surface than small strain finite element analysis, in addition to avoiding excess mesh distortion problems. Furthermore, the flow rule or normality can be effectively checked in the large deformation finite element analysis and further used to improve the fitting quality. After validated against retrospective simulations, the better performance of the developed plasticity force-resultant model is demonstrated by comparing with available experimental observations from centrifuge test.

AB - This paper presents an improved plasticity force-resultant model for anchors deeply embedded in clays, developed from large deformation finite element analyses. The current available force-resultant models for anchors are mainly developed from small strain finite element analysis while experimental approach has not been used due to technical challenges. The advantage of large deformation finite element analysis is that it provides much more data points to fit the yield surface than small strain finite element analysis, in addition to avoiding excess mesh distortion problems. Furthermore, the flow rule or normality can be effectively checked in the large deformation finite element analysis and further used to improve the fitting quality. After validated against retrospective simulations, the better performance of the developed plasticity force-resultant model is demonstrated by comparing with available experimental observations from centrifuge test.

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KW - large deformation finite element analysis

KW - Plasticity force-resultant model

KW - plate anchor

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