中文摘要：

针对电机噪声分析时有限元软件ANSYS不能直接得到声响特性与实验数据比对的问题,研究与振动声学分析软件SYSNOISE进行联合仿真的方法。以一台永磁直流电机为例,建立基于AN-SYS的结构动力模型,计算振动频响特性并作为输入边界激励条件加入SYSNOISE,用SYSNOISE计算出声压频响特性。仿真与实验结果表明,最大相对误差为8.5%,满足工程设计需要。给出了AN-SYS与SYSNOISE间结构网格和边界条件预处理与导入的具体办法,解决了两个软件的兼容问题。该方法利用两个软件的优势加快了计算速度,仿真结果亦直观,方便与实验结果相比较。

英文摘要：

Due to be lack of the acoustic radiation characteristics and experimental data comparision in the noise analysis of motor by ANSYS-a finite element method（FEM） software,the paper presented a co-simulation method with ANSYS and SYSNOISE-a boundary element method（BEM） software.The structural dynamic model of a permanent magnet direct current（PMDC） motor was built,and the vibration frequency response analysis results were transferred to the SYSNOISE as the boundary conditions for calculating the acoustic pressure frequency response function.With the comparision of simulation and experimental data,the maximum relative error is 8.5% and the engineer design requirements were met.The pre-processing and import of structural grids and boundary conditions were especially presented,and compatibility problems of the two softwares were solved.The calculation speed was accelerated with the method by the advantages of the two softwares.The simulation results are intuitive and convenient to be compared with the experimental results.