The numerical analysis of vibro - acoustic characters of a gear structure was carried out by use of structural FEM and acoustic BEM.
交替运用结构有限元法与声学边界元法，对齿轮结构振动声学特性数值计算问题进行了研究。
Vibrations of an excited U-shape pipe and its radiation field are investigated by using FEM software ANSYS and acoustic BEM code SYSNOISE.
利用有限元软件AN SY S和声学边界元软件SY SNO ISE对U型管道结构的受激振动与辐射声场进行分析。
The acoustic analysis model for an automotive exhaust muffler is built, and the transmission loss of exhaust muffler is measured by test and also simulated by using both FEM and BEM.
建立某汽车排气消声器的声学分析模型，采用有限元法和边界元法对排气消声器的传递损失进行了仿真分析和试验测试。
The BEM is applied to calculating the acoustic field in axisymmetric ducts and mufflers as well as the sound radiation from open end.
边界元法用于计算轴对称管道及消声器内部声场与管口声辐射问题。
Then, Acoustic-Structure sensitivity was evaluated with linking velocity sensitivity in FEM and Acoustic Sensitivity in BEM.
将两个灵敏度联合，得到声学-结构设计灵敏度。
The four-pole parameters of muffler can be obtained using BEM, therefore the acoustic characteristics such as transmission loss can be predicted .
由边界元法计算出消声器的四极参数，从而预测传递损失等消声量。
Numerical calculation of fluid-structure acoustic coupling vibration were carried out for a 3-d elastic structure with FEM applied to structure analysis and BEM to fluid respectively.
本文对水下三维弹性结构振动的声辐射问题进行了流体-结构声耦合振动的数值计算。
FEM and BEM were used to analyse the dynamic response of the BIP and acoustic cavity.
使用有限元和边界元法分析了白车身结构和声腔的动态响应特性。
Therefore, there are no problems such as parameters interpolation, singular integration etc. in WSA based acoustic holography, which are inherent to BEM based NAH.
因而，基于波叠加法的声全息就不存在边界面上的参数插值和奇异积分等问题，而这些问题是基于边界元法的声全息所固有的。
Therefore, there are no problems such as parameters interpolation, singular integration etc. in WSA based acoustic holography, which are inherent to BEM based NAH.
因而，基于波叠加法的声全息就不存在边界面上的参数插值和奇异积分等问题，而这些问题是基于边界元法的声全息所固有的。
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