减速器系统振动与声辐射特性研究  

A Study of Vibration and Sound Radiation Characteristics on Gear Speed Reducer

作　　者：邵忍平[1] 薛腾[1] 马杰[1] 

机构地区：[1]西北工业大学机电学院,陕西西安710072

出　　处：《计算机测量与控制》2011年第9期2230-2233,共4页Computer Measurement &Control

基　　金：国家自然科学基金(50575187);航空科学基金(01I53073);陕西省自然科学基金(2004E219);西北工业大学研究生创业种子基金(Z2011079)

摘　　要：建立了齿轮减速器系统的三维实体模型和有限元模型,利用ANSYS有限元软件进行网格划分和对减速器系统进行了动力学特性与响应分析,得到了系统的各阶固有频率和振型;在此基础上提取出减速器系统5个外表面和高、低速齿轮表面各单元面积、中心点坐标和节点振幅等物理量,然后结合声场理论的离散瑞利积分法,并考虑各壁板隔声量的影响,通过声场叠加原理计算得到了减速器外声场各点处所辐射的声压和声强值,并将此数值仿真结果与已有的实际测量数据进行了比较,表明用数值仿真和声学理论相结合的方法来进行齿轮系统振动噪声预估的正确性,这对减速器系统的减振降噪和噪声控制具有重要意义。Three--dimensional elastomeric model and finite element model of speed reducer system are established. Using finite element software ANSYS, the FEM meshing is performed, and the dynamic characteristic and the response of speed reducer system are analyzed, mode shape and natural frequency of the system are obtained. Based on these, the area, the centroid coordinate and node displacement of ev- ery element belongs to the five outer surfaces of speed reducer system and the surfaces of the high, low gear are extracted. Then, Be com- bined with the discrete Rayleigh method of sound field theory, and consider the influence of each board of speed reducer on sound insulation, the sound intensity and the sound pressure of speed reducer system＇ s outer surfaces are calculated by making use of sound field superposition method. Finally, this numerical simulation results are compared with the experimental datas, it show that the correctness of using numerical simulation and acoustic theory to estimate vibration and noise of the gear system. These have important significance for vibration reduction and noise control of speed reducer system.

关 键 词：齿轮系统 动力学特性 声学特性 隔声原理 声场叠加 离散瑞利积分 

分 类 号：TH113.1[机械工程—机械设计及理论]