摘要
通过对具有预裂纹的圆柱形带缺口试件的高温低周疲劳试验，并借助于带有非硬化区的双曲面模型程序，进行了轴对称问题的循环应力、应变计算．探讨了裂纹扩展寿命用当量应交范围表征的可能性．研究表明，三维应力状态下裂纹扩展期的寿命可以采用当量形式的Ｍａｎｓｏｎ一Ｃｏｆｆｉｎ公式进行表征．
A high-temperature low cycle fatigue experiment is conducted on cylindrical specimen with preexisting crack at the notch root and the cylic sttain and stress of axial symmetry is caculated by means of the program of two surface's model with in no-harden range of dernoustrating. The possibility is discussed, the crack expanssion life in the equivalent strain range under three-dimension stress state.
出处
《石油化工高等学校学报》
CAS
1995年第3期30-33,共4页
Journal of Petrochemical Universities
关键词
疲劳
裂纹扩展
寿命
金属材料
高温
Fatigue
Crack propagation
Lifetimes/Equivalent strain range
