铝合金气缸盖低周疲劳蠕变耦合寿命预测的仿真与试验研究
Predicting Low-Cycle-Fatigue-Creep Life of Aluminum Alloy Cylinder Head under Elevated Temperatures: A Combined Simulation and Experimental Study
针对柴油发动机铝合金气缸盖日益严重的低周疲劳-蠕变问题进行了仿真和实验研究。通过发动机整机试验确定了铝合金气缸盖在各种工况下的温度场。并通过采用电磁感应加热设备对气缸盖进行了加速热疲劳试验。此外，还采用基于能量法建立的低周疲劳-蠕变部件级寿命模型。该模型的有效性通过有限元模拟进行了验证，并确定了失效位置和失效循环次数。
Theexperimental and simulation studies aimed at the increasingly severe low cycle fatiguecreep problem of aluminum alloy cylinder heads in diesel engines were carried out. A whole-engine experiment was performed to determine the temperature field of the aluminum alloy cylinder head under various working conditions. Additionally, an electromagnetic induction heating equipment was employed to perform an accelerated thermal fatigue test on the aluminum alloy cy…查看全部>>
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