某重型变速器壳体的结构动力学优化  

Structural Danamics Optimization of a Heavy-Duty Transmission Housing

作　　者：杨啟梁[1] 任波 李瑾宁 胡溧[1] YANG Qi-liang;REN Bo;LI Jin-ning;HU Li(College of Automobile and Traffic Engineering,Wuhan University of Science and Technology,Hubei Wuhan430081,China;Dongfeng Commercial Vehicle Technical Center of DFCV,Hubei Wuhan430056,China)

机构地区：[1]武汉科技大学汽车与交通工程学院,湖北武汉430081 [2]东风商用车有限公司技术中心,湖北武汉430056

出　　处：《机械设计与制造》2020年第11期90-93,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金资助项目(51105283)。

摘　　要：为了改善某重型变速器壳体的动态特性,对其进行了结构动力学优化。对壳体进行了试验模态和计算模态分析。采用结构优化思想对壳体有限元模型进行修正提高了模型精度。以优化壳体第9阶约束模态固有频率(647Hz)为目标,对其主箱13根加强筋的厚度和高度进行了参数化处理,联合Workbench软件对其进行了"参数关联性分析",获取了参数的灵敏度并将其缩减至4个独立参数。最终对上述参数进行动力学优化,将壳体第9阶固有频率提高至662Hz,避免了壳体发生共振。该研究思路可为类似结构的变速箱动力学优化问题提供参考。In order to improve the dynamic characteristics of a heavy-duty transmission housing,the structural dynamics optimization was carried out.The experimental modal and computational modal analysis of the shell are applied.The structural optimization theory is used to updating the shell finite element model to improve the accuracy of the model.In order to optimize the natural frequency of the ninth order constraint mode of the shell(647 Hz),the thickness and height of the 13 ribs in the main box were parameterized.The"parameter correlation analysis"was carried out by the Workbench software,and the sensitivity of the parameters was obtained and reduced to 4 independent parameters.Finally,the above parameters are been optimized,and the ninth order natural frequency of the shell is increased to 662 Hz.The research idea can provide reference for similar structural optimization of gearbox dynamics.

关 键 词：重型变速器壳体 有限元模型修正 参数关联性分析 结构动力学优化 

分 类 号：TH16[机械工程—机械制造及自动化] U467.3[机械工程—车辆工程]