Large strain finite element analysis of sand: model, algorithm and application to numerical simulation of tire–sand interaction

摘要: Abstract Based on a review of several existing models for the elastic responses geomaterials, new nonlinear law is suggested. A fully implicit return mapping algorithm non-associative elastoplastic geomaterials presented within regime large strains. This formulated in principal axes. Algorithmic tangent moduli are derived. modified critical state model conjunction with implemented into general purpose finite element software MARC, using proposed algorithm. Furthermore, tire–sand interaction numerically simulated, employing and