有限变形弹塑性理论及一致性算法  

FINITE DEFORMATION ELASTO-PLASTIC THEORY BASED ON LOGARITHMIC STRAIN AND CONSISTENT ALGORITHM

作　　者：刘学军[1] 李明瑞[1] 黄文彬[1] 

机构地区：[1]中国农业大学(东区)应用力学研究室,北京100083

出　　处：《固体力学学报》2002年第1期24-33,共10页Chinese Journal of Solid Mechanics

摘　　要：通过对对数应变的引用 ,成功地将小变形弹塑性理论移植到有限变形之中 ,形成了一套完整的有限变形弹塑性理论 ,进一步发展了具有一阶精度的一致性弹塑性算法 .最后 。An accurate finite deformation elasto-plastic theory based on the logarithmic strain is transplanted from infinitesimal deformation elasto-plastic theory. A consistent algorithm with first-order accuracy is developed. Finally, several numerical examples are given to demonstrate the validity of the theory and the efficiency of the algorithm.

关 键 词：弹塑性理论 有限变形 一致性算法 对数应变 

分 类 号：O344.3[理学—固体力学]