摘要
研究了原始Miner理论,在不考虑同级载荷自身离散的前提下,将原始Miner理论中的疲劳寿命和损伤度明确为破坏概率的函数,不仅修正了原始Miner理论的判据和结论,而且能更好地解决工程上部件受载荷谱作用时对应任意破坏概率下的寿命和部件受载荷谱作用任意次(块)时部件的破坏概率这两类最常见的问题。举例阐述了实用概率Miner理论在汽车部件疲劳计算上的应用。
The Miner Fatigue Damage Theory is studied in the paper.Under the precondition of ruling out self discretion of the same load class,the fatigue life and injury tolerance in the original Miner Fatigue Damage Theory are defined explicitly as function of failure probability,this not only remedies basis of the original Miner Theory and conclusion,but also can solve two kinds of problems frequently occurred,one is life of components at any failure probability under effect of load spectrum,the other is failure pr...
出处
《汽车技术》
北大核心
2009年第12期12-16,共5页
Automobile Technology
关键词
Miner理论
概率
疲劳寿命
载荷谱
Miner Fatigue Damage Theory
Probability
Fatigue life
Load spectrum
