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以提高某型加工中心立柱的动态特性为目的,对立柱进行了有限元模态分析和谐响应分析,依据立柱的前5阶模态振型和固有频率及立柱的位移-频率响应曲线,对立柱的动态特性进行分析。运用ANSYS对立柱进行拓扑优化分析,依据分析得到的立柱结构材料最佳分布和立柱设计经验,改进原立柱结构,再将改进后的立柱进行有限元分析验证。结果表明:立柱前5阶模态固有频率提高,位移-频率响应峰值减小,立柱的动态特性得到显著改善。
In order to improve the dynamic characteristics of a certain type of machining center column, the finite element modal analysis and harmonic response analysis of the column are carried out. Based on the first five modes of the column and the natural frequency and the displacement-frequency response curve of the column, The dynamic characteristics of the analysis. Based on the analysis of the optimal distribution of column structure materials and the experience of column design, the original column structure was improved by ANSYS, and then the improved column was verified by finite element analysis. The results show that the natural frequency of the first five modes of column increases, the peak value of displacement-frequency response decreases, and the dynamic characteristics of the column are significantly improved.