Conference Proceedings
Implementation of a Force-Resultant Model Describing Spudcan Load-Displacement Behaviour Using an Implicit Integration Scheme
George Vlahos, Mark J Cassidy, Christopher M Martin, E Fontaine (ed.), K Uchida (ed.), JS Chung (ed.), H Moshagen (ed.)
PROCEEDINGS OF THE EIGHTEENTH (2008) INTERNATIONAL OFFSHORE AND POLAR ENGINEERING CONFERENCE, VOL 2 | INTERNATIONAL SOCIETY OFFSHORE& POLAR ENGINEERS | Published : 2008
Abstract
This paper describes the numerical formulation of a force-resultant model describing the elasto-plastic load-displacement behaviour of a spudcan foundation in clay. The formulation uses an implicit integration scheme, which has the advantages of numerical efficiency and insensitivity to increment size. Importantly to the user, step-size does not require determination before investigating "unknown" problems. Implementation of the model as a user element subroutine for the commercially available finite element program ABAQUS is described. The formulation presented ensures optimum compatibility with the incremental-iterative solution scheme employed by ABAQUS itself, and therefore allows effici..
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