一台汽车的上万个零件中,少数关键部件,对该车的寿命起着决定的作用,因此对关键件的力学分析,材质分析,工艺过程分析是汽车技术中重要的环节。实践证明,零件的破坏原因往往出现在上述三个方面,而且绝大多数的零件均为疲劳破坏,所以,研究疲劳破坏的原因尤其重要。 A car’s thousands of parts, a few key components, the life of the car plays a decisive role, so the mechanical analysis of key components, material analysis, process analysis is an important part of automotive technology. Practice has proved that the reasons for the destruction of parts often appear in the above three aspects, and the vast majority of parts are fatigue damage, so the study of the causes of fatigue damage is particularly important.