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文中针对汽车车架给出了模态试验的实验原理及实验结果,并对结果进行了分析,模态试验和理论计算相对照的结果表明模态试验分析不仅可以用于分析车架结构的动力学特性,还可以直接评价结构设计,预估在一定使用环境下结构可能出现的问题,是一种有效的故障诊断方法。
In this paper, the experimental principle and the experimental results of the modal test are given for the automobile frame, and the results are analyzed. The results of the modal test and the theoretical calculation show that the modal test analysis can not only be used to analyze the dynamics of the frame structure Learn characteristics, but also can directly evaluate the structural design, predict the structure may occur under certain conditions, is an effective fault diagnosis method.