基于MATV技术的某减速器壳体声辐射研究

发布时间：2018-02-14 23:10

本文关键词： 减速器模态声传递向量声辐射模态参与因子模态声学贡献　出处：《机械传动》2016年08期 　论文类型：期刊论文

【摘要】：应用有限元方法对某减速器壳体进行了模态计算和振动响应计算,然后基于模态声传递向量(Model acoustic transfer vector,MATV)技术,计算得到减速器壳体的辐射声功率、壳体表面空气振动速度分布、外场声压级分布以及外场场点声压级等声学响应,展示了模态声传递向量技术在减速器声辐射预测中的应用方法和途径。通过对壳体对模态声学贡献量进行分析,确定了通过结构优化降低声辐射的方法。同时,壳体表面空气振动速度分布为粘贴阻尼材料降低减速器壳体声辐射提供了重要参考。
[Abstract]:The modal calculation and vibration response calculation of a reducer shell are carried out by using finite element method. Based on the modal acoustic transfer vector model acoustic transfer vector MATLAB, the radiated sound power of the reducer shell and the distribution of the air vibration velocity on the surface of the reducer shell are calculated. The acoustic response such as the distribution of sound pressure level in the external field and the sound pressure level at the external field point are demonstrated. The application of modal acoustic transfer vector technology in the prediction of sound radiation of reducer is demonstrated. The contribution of the shell to the modal acoustic is analyzed. At the same time, the velocity distribution of air vibration on the surface of the shell provides an important reference for the damping material to reduce the sound radiation of the reducer shell.
【作者单位】：重庆大学汽车工程学院;
【分类号】：TH132.46

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