摘要
基于稳态循环载荷过载迟滞不严重这一思想，利用疲劳Ｐ－Ｓａ－Ｓｍ－Ｎ曲面及疲劳概率Ｍｉｎｅｒ累积损伤理论估算疲劳可靠寿命；根据线弹性断裂力学原理导出了稳态循下断裂Ｐ－Ｓａ－Ｓｍ－Ｎ曲面公式及断裂概率Ｍｉｎｅｒ公式，用以估自然断裂可靠寿命。最后，给出了直升机动部件可靠寿命估算实例。
Because of no overload delay effection under the steady cyclic load, the fatigue reliable life of the components is estimated with the use of the fatigue P-S a-S m-N surface and the fatigue probabilitic Miner rule. On the basis of the fracture principle and Walker formula, the equation of the fracture P-S a-S m-N surface and the fracture probabilitic Miner rule are derived. By means of the fracture P-S a-S m-N surface and the fracture probabilitic Miner, the fracture reliable life may be estimated. Finally, an example that the fatigue/fracture reliable life of the motive components on the helicopter are estimated by these method is given.
出处
《应用力学学报》
CAS
CSCD
北大核心
1997年第3期14-18,共5页
Chinese Journal of Applied Mechanics
基金
国家自然科学基金
关键词
二维
疲劳概率
断裂概率
可靠性
累积损伤
the fatigue P-S a-S m-N surface, the fracture P-S a-S m-N surface, two dimensional fatigue probabilitic Miner rule, two dimensional fracture probabilitic Miner rule.
