摘要
对薄壁管进行多轴恒幅比例加载疲劳试验,并运用弹塑性有限元法对该加载条件下的薄壁管进行分析和计算,材料弹塑性特性由von Mises屈服准则和多线性随动硬化准则描述。结果表明,用有限元法计算的试件应力应变值与试验结果吻合。最后,用此方法对缺口件危险点处应力应变状态进行分析。
The thin tubular specimens are used to carry out the multiaxial fatigue tests under proportional loading with constant amplitudes. The stress and strain of tubular specimen subjected to proportional loading are analyzed by the elastic-plastic finite element method with von Mises yield criterion and multilinear kinematic hardening rule. The results showed that the calculated stress-strain values by FEM（finite element method） have good agreement with the experimental results. Finally the stress-strain state of the critical position for notched specimen is analyzed and calculated by the proposed finite element model.
出处
《机械强度》
EI
CAS
CSCD
北大核心
2007年第4期620-626,共7页
Journal of Mechanical Strength
基金
国家自然科学基金(10172010)
北京市高校拔尖创新人才资助项目~~
关键词
有限元法
比例加载
缺口件
Finite element method
Proportional loading
Notched specimen
