摘要
详细讨论了广义塑性力学中屈服面和塑性势面的对应关系以及岩土材料的三类屈服面 (即体积屈服面与 q方向上及θσ 方向上的剪切屈服面 )的基本特征 ,尤其是提出了能考虑剪胀与剪缩的体积屈服面和应力Lode角θσ 方向的剪切屈服面。指出在广义塑性力学中不必采用硬化定律 ,就能得出塑性应变增量与应力增量的关系 。
The relation between the yield surface and the plastic potential surface based on the generalized plastic mechanics is discussed systematically, and the basic characters of the yield surface, especially of volumetric yield surface that can calculate dilatant volume strain and shear yield surface in stress Lode angel direction for the first time, are also discussed. The stress strain relation is obtained without hardening law, and the elastoplatic stiffness matrix is deduced with two methods.
出处
《岩土力学》
EI
CSCD
2000年第3期305-308,共4页
Rock and Soil Mechanics
基金
国家自然科学基金! ( 1 9672 0 73)
关键词
广义塑性力学
屈服面
应力-应变关系
generalized plastic mechanics
yield surface
plastic potential surface
stress strain relation
