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首页> 外文会议>International Congress and Exposition on Noise Control Engineering >Sound Radiation and Interior Noise Analysis of Vehicle Structures using PFBEM Software
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Sound Radiation and Interior Noise Analysis of Vehicle Structures using PFBEM Software

机译：使用PFBEM软件的车辆结构的声辐射和内部噪声分析

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Applying boundary element technique to Power Flow Analysis (PFA), Power Flow Boundary Element Method (PFBEM) is studied as a new tool for the noise and vibration analysis in medium-to-high frequency ranges, and the noise and vibration prediction system is developed using this method. The developed prediction software includes both the direct and indirect approaches, and also offers the various functions such as the multi-domain, absorption boundary condition and so forth. To verify the accuracy, the developed prediction software is applied to the prediction of the vibration energy distributions in the simple beams and thin plates, and the results are compared with exact PFA solutions. As practical examples, car cabins surrounded by the materials of different absorption coefficients are modeled and the distributions of the smoothed acoustical energy density are successfully predicted. And also, for radiation noise analysis, submarine structure is modeled and acoustical energy density and intensity radiated from this structure are effectively predicted.
机译：将边界元技术应用于电流分析（PFA），电流边界元方法（PFBEM）被研究为中高频范围中噪声和振动分析的新工具，开发了噪声和振动预测系统使用此方法。开发的预测软件包括直接和间接方法，并且还提供各种功能，例如多域，吸收边界条件等。为了验证精度，将开发的预测软件应用于简单梁和薄板中的振动能量分布的预测，并将结果与​​精确的PFA溶液进行比较。作为实际示例，由不同吸收系数的材料包围的汽车舱面被建模，并且成功地预测了平滑的声学能量密度的分布。而且，对于辐射噪声分析，潜艇结构是建模的，有效地预测了从该结构辐射的声学能量密度和强度。

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