摘要
在统一粘塑性循环本构模型的框架下对循环硬化的 30 4不锈钢的单轴棘轮行为进行了本构描述 .模型中通过随动硬化背应力演化和各向同性变形阻力演化对 30 4不锈钢在非对称应力循环下的循环附加硬化和循环流动特性进行了分析 ,同时考虑了加载历史对循环棘轮行为的影响 .将模型应用于 30 4不锈钢室温单轴循环棘轮行为及其对加载历史依赖性的描述中 ,预言结果与实验结果吻合较好 .
The ratcheting of 304 stainless steel was described in the frame of unified visco plastic cyclic constitutive model. In the model, the cyclic hardening and cyclic flow properties of 304 stainless steel under asymmetrical stress controlled cycling were analyzed by the evolution rules of kinematic hardening back stress and isotropic deforming resistance. The effect of load history on the ratcheting was also considered. Comparing with the experimental results of 304 stainless steel, the predicting ability of the developed model is proved to be well.
出处
《固体力学学报》
CAS
CSCD
北大核心
2002年第2期167-172,共6页
Chinese Journal of Solid Mechanics
基金
国家自然科学基金 (19772 0 4 1)
四川省跨世纪青年学科带头人培养基金资助 .
关键词
单轴循环
不锈钢
棘轮行为
本构描述
粘塑性
stainless steel, ratcheting, visco plasticity, constitutive model
