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本文叙述利用瞬态激励进行模态分析和参数识别的方法。通过对悬臂板,叶片轮盘组合体模型所作的试验说明了这种方法的优越性。本文讨论了实施锤击法的具体操作和提高测试精度的问题。通过试验测定了各模型的模态参数,有些点还采用了频率细化技术。试验结果和正弦慢扫法结论得到良好的吻合。
This article describes the use of transient excitation modal analysis and parameter identification methods. Experiments on the cantilever plate and blade-wheel assembly model illustrate the superiority of this method. This article discusses the implementation of the hammering operation and improve the accuracy of the test. The modal parameters of each model were tested through experiments, and the frequency refinement technique was also adopted at some points. The result of the experiment is in good agreement with the conclusion of the sine slow sweep method.