弹性支承平台结构模态分析的有限元方法与试验研究

THE FINITE ELEMENT METHOD AND EXPERIMENTAL STUDY ON MODEL ANALYSIS OF THE ELASTICALLY SUPPORTED PLATFORM STRUCTURE

在大型平台的结构设计中 ,对于模态频率的分析是不可忽视的。以某研究所的阻抗测试平台为背景 ,采用有限元分析程序 ,初步做了模态分析和谐响应分析 ,并重点对其进行了试验研究。试验证明 ,对于大型及有高频要求的平台 ,在设计时应考虑其模态问题 ,还可看出 ,计算结果具有较高的精度。

The model analysis of the design of large platform structure shall not be ignored. An actual example of testing table for impedance of some academy has been studied by use of dynamic finite element program. A primary analysis of the model and harmonic response, were done with an emphasis on its experimental study.The experiment proves that the program of the model should be considered in the design of large platform and the calculation in this paper has a higher accuracy.