SVU车内噪声声固耦合分析与优化
Analysis and Optimization of Acoustic-Structure Interaction of SUV Interior Noise
摘要: 为改善SUV的噪声、振动、粗糙度(NVH)性能，通过Solidworks建立SUV整车结构的声固耦合模型，采用有限元仿真与试验相结合的方式对车内噪声响应进行模态分析，将贡献量大的板件进行优化。从计算结果中发现在后三角窗和C柱区域板件、左后侧中部板件以及顶盖板件的振动噪声贡献量很大，据此确定优化区域以及优化方案。与原始车型相比，改进后车辆在各车速工况下的舒适性评价指标最大优化比达到了21.11%，驾驶员右耳处噪声声压级降低的分贝值最大优化比为8.9%，说明此次优化对于车内噪声声压级起到了很好的抑制效果。
Abstract: In order to improve the noise, vibration and harshness (NVH) performance of SUVs, the acoustic-structure interaction model of the SUV vehicle structure was established through Solidworks, and the modal analysis of the noise response in the vehicle was carried out by combining finite element simulation and experiment, and the plates with large contributions were optimized. From the calculation results, it is found that the vibration and noise contribution of the plate in the rear triangle window and C-pillar area, the middle plate of the left rear side and the top cover plate is very large, and the optimization area and optimization scheme are determined accordingly. Compared with the original model, the maximum optimization ratio of the comfort evaluation index of the improved vehicle under various speed conditions reached 21.11%, and the maximum optimization ratio of the decibel value of the noise sound pressure level reduction at the driver’s right ear was 8.9%, indicating that the optimization had a good suppression effect on the noise sound pressure level in the car.
文章引用：杨袁雄. SVU车内噪声声固耦合分析与优化[J]. 传感器技术与应用, 2024, 12(6): 860-869. https://doi.org/10.12677/jsta.2024.126094

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