| 基于FEM/BEM变速器箱体辐射噪声的研究 |
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| 引用本文： | 王文平,项昌乐,刘辉.基于FEM/BEM变速器箱体辐射噪声的研究[J].噪声与振动控制,2007,27(5):107-111. |
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| 作者姓名： | 王文平 项昌乐 刘辉 |
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| 作者单位： | 北京理工大学车辆传动国家重点实验室 北京100081 |
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| 摘 要： | 采用有限元和边界元联合的方法对变速器箱体的辐射噪声进行分析研究。首先针对某型车辆变速箱箱体,建立箱体与箱体内机油的流固耦合有限元模型和箱体的边界元模型,并分析其所受激励载荷;然后进行强迫振动有限元的数值仿真计算,并通过试验进行验证,试验数据与仿真数据基本吻合;最后将振动的有限元计算结果作为箱体边界元模型的边界条件进行噪声辐射的数值仿真计算。根据计算的结果,对该箱体的结构进行有针对性的加筋强化,仿真计算的结果表明,进行加筋处理后的箱体噪声辐射能得到有效的抑制。
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| 关 键 词： | 声学 声辐射 有限元 边界元 流固耦合 |
| 文章编号： | 1006-1355（2007）05-0107-05 |
| 修稿时间： | 2007-04-02 |
Study on the Radiation Noise of Gearbox Housing Based on FEM/BEM |
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| WANG Wen-ping,XIANG Chang-le,Liu Hui.Study on the Radiation Noise of Gearbox Housing Based on FEM/BEM[J].Noise and Vibration Control,2007,27(5):107-111. |
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| Authors: | WANG Wen-ping XIANG Chang-le Liu Hui |
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| Affiliation: | National Key Laboratory of Vehicle Transmission, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | The radiation noise of gearbox housing is studied by the use of combined the FEM and BEM.The fluid-structure coupling finite element model and the boundary element model of a complex gearbox housing are built based on the theory of fluid-structure coupling finite element method and boundary element method.At the same time the exciting forces of the housing are applied to the models.Firstly,vibration of the housing is calculated by the fluid-structure coupling finite element model.Then the calculated result is verified by the experiment.Finally sound radiation of the housing is calculated by the boundary element.According to the calculated results,the housing adds some ribs not only to increase the strength,but also to reduce the sound radiation of the housing. |
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| Keywords: | acoustics radiation noise finite element model boundary element model fluid-structure coupling |
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