齿轮箱动态响应及辐射噪声数值仿真  

Numerical simulation of dynamic response and radiation noise of gearbox

作　　者：林腾蛟[1] 廖勇军[1] 李润方[1] 刘文[1] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400030

出　　处：《重庆大学学报（自然科学版）》2009年第8期892-896,共5页Journal of Chongqing University

基　　金：国家科技支撑计划资助项目(2006BAF01B01-03);重庆市重大科技专项项目(CSTC;2007AB3030)

摘　　要：建立了齿轮箱传动系统及结构系统的动力有限元分析模型,综合考虑轮齿刚度激励、误差激励和啮合冲击激励等内部动态激励的影响,应用ANSYS软件对齿轮箱的固有模态和内部激励下的动态响应进行有限元数值仿真。以动态响应结果作为边界激励条件,建立了齿轮箱箱体的声学边界元分析模型,利用SYSNOISE软件中的直接边界元法求解箱体表面声压及场点辐射噪声,并对齿轮箱进行空气噪声测试。比较辐射噪声的测试结果与数值仿真结果,两者吻合良好。Considering the internal dynamic excitation produced by stiffness excitation, error excitation and mesh impact excitation, a dynamic finite element model of transmission system and structure system of gearbox is established. The normal mode and the dynamic responses of gearbox under the internal dynamic excitation are calculated by using the numerical simulation software ANSYS. Based on the result of dynamic responses, the boundary excitation condition is determined, and then the acoustic boundary element model is built. With the software of SYSNOISE, the surface acoustic pressure of gearbox and the radiation noise of field points are solved by the direct boundary element method. The test of airborne noise is carried out. The computational results obtained are in a good agreement with the data of experimental test.

关 键 词：齿轮箱 动态响应 辐射噪声 有限元法 边界元法 

分 类 号：TH113.1[机械工程—机械设计及理论]