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整机结构动力学特性边界元法解析
引用本文:方英武,张广鹏,黄玉美.整机结构动力学特性边界元法解析[J].中国机械工程,2005,16(19):1708-1711.
作者姓名:方英武  张广鹏  黄玉美
作者单位:西安理工大学,西安,710048
基金项目:陕西省自然科学基金资助项目(2003E208),陕西省教育厅专项科研基金资助项目(02JK112)
摘    要:研究了考虑结合部特性的机床结构动力学特性的系统建模解析方法。将整机结构用梁元件、弹簧元件和集中质量元件来等效,并将结合部特性引入到整机模型中,基于边界元法建立了整机结构的动力学方程,快速地求得了整机结构相应的动力学特性。数值算例与实验结果表明,上述方法不但节约了计算量,而且具有很高的精度,可有效地解决各种复杂系统结构的动力学建模解析问题。上述方法对于提高机床结构的理论计算和设计水平具有十分重要的意义。

关 键 词:动力学  结合部  边界元法  机床
文章编号:1004-132X(2005)19-1708-04
收稿时间:2004-10-20
修稿时间:2004-10-20

Study on Dynamics Characteristics of Whole Structure by BEM
Fang Yingwu,Zhang Guangpeng,Huang Yumei.Study on Dynamics Characteristics of Whole Structure by BEM[J].China Mechanical Engineering,2005,16(19):1708-1711.
Authors:Fang Yingwu  Zhang Guangpeng  Huang Yumei
Abstract:Analytical methods on dynamics model of machine tool structure with joints were studied.The whole structure was modeled by beam elements,spring elements and mass elements.Characteristics of joints were taken into account in the models of the whole structure.Dynamics equations of the whole structure were deduced by making use of boundary element methods(BEM),and the corresponding dynamic characteristics were obtained rapidly.Numerical examples and experiments show that the established method of this study saves computing efforts and prossesses good precision,and systematic dynamics model and calculation of complex structures can be completed effectively.So,it has very important values for improving theoretical calculation and design level of the machine tool structures.
Keywords:dynamics  joint  boundary element method(BEM)  machine tool
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