一种计及滑块裙部变形的滚珠直线导轨副模态分析方法

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基于计及滚珠直线导轨副滑块裙部变形的刚度模型，提出了一种滚珠直线导轨副的有限元模态分析方法，建立了一种滚珠直线导轨副的三维有限元模型并进行了有限元模态分析，求得了滚珠直线导轨副的模态频率及模态振型。利用实验模态分析技术，对滚珠直线导轨副进行了模态测试，测得了滚珠直线导轨副的模态。测试结果验证了有限元建模与分析方法的有效性。 Based on the rigidity model of a linear ball guide incorporating the flexibility of the carriage,a modal analysis method was proposed by using finite element analysis. A three dimensional finite element model of a linear ball guide was established. The finite element modal analysis was conducted and the modal frequencies and vibration modes were presented. The modal testing experiment was conducted on the type of linear ball guide. For the occurrence of the modes, the finite element analysis results based on the presented method almost match with the experimental ones.