【摘要】 运用 ADINAT/ ADINA有限元程序分析了船舶柴油机活塞的三维温度场和三维应力应变场 ,并采用带中央环状缺口的圆柱型试件在单轴疲劳试验机上进行了热疲劳寿命模拟试验 ,根据高温强度理论归纳了当量应变范围评价准则并将这一准则用于柴油机活塞的寿命预测 ,并证实了同相热疲劳模式预测结果是合适的更多还原

【Abstract】 Three dimension temperature fields and stress strain fields of the marine engine piston were analyzed by means of the program “ADINAT/ADINA”.The simulating tests of thermal fatigue were carried out with the cylindrical specimens with annular notches.According to the theory of high temperature strength,the equivalent strain range criterions were induced to predict the piston life and it was verified that the predicted results of in phase thermal fatigue were effective.更多还原