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

被引:25
|
作者
Liu, CH
Wong, JY
Mang, HA
机构
[1] MARC Anal Res Corp, Palo Alto, CA 94306 USA
[2] Carleton Univ, Dept Mech & Aerosp Engn, Transport Technol Res Lab, Ottawa, ON K1S 5B6, Canada
[3] Vienna Univ Technol, Inst Strength Mat, A-1040 Vienna, Austria
基金
加拿大自然科学与工程研究理事会;
关键词
finite element; large strain; plasticity; sand;
D O I
10.1016/S0045-7949(99)00049-8
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
Based on a review of several existing models for the elastic responses of geomaterials, a new nonlinear elastic law is suggested. A fully implicit return mapping algorithm for non-associative elastoplastic models of the geomaterials is presented within the regime of large strains. This algorithm is formulated in the principal axes. Algorithmic tangent moduli are derived. A modified critical state model in conjunction with the new nonlinear elastic law is implemented into the general purpose finite element software MARC, using the proposed algorithm. Furthermore. the tire-sand interaction is numerically simulated, employing the modified model and the algorithm. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:253 / 265
页数:13
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