|
Abstract:
The function of constant amplitude median Sa-Sn-Nf
surface is established. And the two-dimensional statistical
Miner's rule is proposed for reliability based prediction of
fatigue life under variable araplitude loading. Then,
Wirsching's model is restudied, and it is found that
Wirsching's model is not of self-consistency. Therefore the
modification of Wirsching's model is performed based on
statistical Miner's rule. In the end, an example of application
is presented, showing that the two-dimensional statistical
Miner's rule is very convenient and feasible in fatigue
reliability anaiysis for engineering structures.
Key words: Fatigue
Reliability Median St-Sm-Nc surface Two- dimensional
statistical Miner's rule Wirsching's model
CLC No: TB114.2 O346.2 V215.5 U663
国家自然科学基金(59605010)和上海市高校青年教师基金资助项目(59979015). Received 20000711,
received in revised form 20010826
|