变幅载荷下疲劳寿命预测及其模拟结果

PREDICTION AND SIMULATION OF PROBABILITY DISTRIBUTION OF FATIGUE LIFE UNDER VARIABLE AMPLITUDE LOADING

预测了变幅载荷下给定存活率的疲劳寿命，并用蒙特卡洛法模拟变幅载荷下疲劳试验进行了验证。结果表明，变幅载荷下疲劳寿命的预测结果和模拟结果均服从对数正态分布，且两者符合很好。这一结果与文献［１，２］中的结果相一致。

The fatigue life with given survivability under variable amplitude loading is predicted,and checked by simulating test using Monte Carlo method. The test results show that the predicting fatigue life under variable amplitude loading follow the log normal distribution and agree well with simulation test results.They are in good agreement with the test results shown in ref..