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研究了结构固有频率对于结构设计参数的变化率,设计了一个典型的振动试验夹具,利用I-DEAS有限元程序采用矩阵摄动法分析了夹具的固有频率对设计参数的灵敏度。为夹具的动力学设计和动力修改提供了一种快速有效的动力重分析手段。
The rate of change of structural natural frequency for structural design parameters was studied. A typical vibration test fixture was designed. The sensitivity of the fixture natural frequency to the design parameters was analyzed by I-DEAS finite element program using matrix perturbation method. It provides a fast and effective method of dynamic reanalysis for the dynamic design and dynamic modification of the fixture.