TY - GEN

T1 - A 3D elasto-plastic soil model for lateral buckling analysis

A1 - Hededal,Ole

A1 - Strandgaard,Torsten

AU - Hededal,Ole

AU - Strandgaard,Torsten

PB - The International Society of Offshore and Polar Engineers (ISOPE)

CY - Vancouver

PY - 2008

Y1 - 2008

N2 - Modeling the lay-down of pipelines and subsequently the in- service conditions for a pipeline involves definition of a pipe-soil interaction model. A generalized true 3D elasto-plastic spring element based on an anisotropic hardening/degradation model for sliding is presented. The basis for the model is the elasto-plastic framework. A generic format is selected, allowing different yield criteria and flow rules to be implemented in a simple way. The model complies to a finite element format allowing it to be directly implemented into a standard finite element code. Examples demonstrating the robustness of the model are presented.

AB - Modeling the lay-down of pipelines and subsequently the in- service conditions for a pipeline involves definition of a pipe-soil interaction model. A generalized true 3D elasto-plastic spring element based on an anisotropic hardening/degradation model for sliding is presented. The basis for the model is the elasto-plastic framework. A generic format is selected, allowing different yield criteria and flow rules to be implemented in a simple way. The model complies to a finite element format allowing it to be directly implemented into a standard finite element code. Examples demonstrating the robustness of the model are presented.

KW - elasto-plastic model

KW - pipe-soil interaction

KW - pipelines

SN - 978-1-880653-70-8

VL - 2

BT - Proceedings of the Eighteenth (2008) International Offshore and Polar Engineering Conference

T2 - Proceedings of the Eighteenth (2008) International Offshore and Polar Engineering Conference

SP - 261

EP - 268

ER -