电子计算技术的飞速发展,给解决工程中常用材料的非线性计算开辟了有效途径。针对实际工程提出的许多亟待解决的弹塑性问题,国内外开展了广泛的研究。材料性质较为复杂的岩石一类介质的弹塑性分析,近年来亦有较大的进展。正确建立材料的本构关系已成为进行材料非线性有限元分析的前提和基础。 The rapid development of electronic computing technology has opened up an effective way to solve the nonlinear calculation of commonly used materials in engineering. In response to many elasto-plastic problems that need to be solved in actual projects, extensive research has been conducted at home and abroad. The elasto-plastic analysis of a medium such as rock, which has relatively complex material properties, has made great progress in recent years. Correctly establishing the constitutive relationship of materials has become the premise and basis for nonlinear finite element analysis of materials.