摘要
根据材料在塑性变形后引起的各向异性和Bauschinger效应 ,利用Jhansale模型原理 ,对缺口件在随机加载下的缺口根部的局部应力和应变进行弹塑性有限元分析。有限元分析采用了随动强化模型 ,并考虑材料瞬态局部应力应变的响应特性。最后 。
To predict the stress-strain response of a material subject to the random loading, an increment elastic-plastic finite element model is required. Repeated loads can be thought to be the alternative loading of the tension and compression, and the random loading can be considered to be the repeated loads that their amplitude are not equal. According to the anisotropy caused by the plastic deformation for material and the Bauschinger effect, the local stress and strain were analyzed by elastic-plastic FEM at notch under random loading in this paper. Kinematic hardening model was used in FEM analysis and the response behaviors of transient local stress-strain for material was also considered. Finally, Neuber's calculating results were used to compare and evaluate the FEM analytical results given by this paper, and good correlation was observed.
出处
《机械强度》
EI
CAS
CSCD
北大核心
2001年第3期332-335,共4页
Journal of Mechanical Strength
基金
国家教育部高校骨干教师基金资助项目 (M0 1 0 2 0 0 0 2 )
北京市青年科技骨干培养基金资助项目(I0 1 0 2 0 1 0 1 )~~
