摘要
分析强化方法、加载次序对疲劳寿命的影响,讨论强化系数的选择、试验谱的确定和用局部应力应变监测疲劳损伤等问题,提出用随机次序加载和变频加载的方法.本文分析讨论的结果在旋耕刀轴疲劳试验中得到应用.
Analysed are the influences of strengthening method and loading sequence on fatigue life. Dealt with are the choice of strengthening coefficient, determination of test spectrum and monitoring of fatigue damage by local stress-strain. The loading methods of random sequence and variable frequency are presented. The results arc used in the rator fatigue test.
关键词
旋耕刀轴
疲劳试验
加载
疲劳
rator, fatigue, loading, strengthening, loacal stress-strain.
