A Strain-based Non-linear Elastic Model for Geomaterials

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Abstract

The non-linear elastic behaviour of geomaterials has traditionally been modeled using stressdependent elastic models. The approach used by many researchers is not rigorous where the ?elastic? models can create energy and can predict permanent deformation under certain circumstances. Other researchers have used rigorous hyperelastic models where energy is conserved by the elastic portion of the model, but these models have stress-dependent stiffness which can slow computation and lead to iterative solutions in finiteelement or other strain-based computation techniques. To overcome these problems a rigorous elastic model is investigated which predicts similar behaviour to hyperelastic models, but has the advantage of being elastic strain based which allows more direct solution in strain-based finite-element or other computational codes.
Original languageEnglish
Pages (from-to)197-206
Number of pages10
JournalWSEAS Transactions on Applied and Theoretical Mechanics
Volume3
Issue number6
Publication statusPublished - 2008

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Keywords

  • Elastic strain
  • Non-linear
  • Finite Element
  • Geomaterials
  • Elasticity

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