噪声与振动控制

噪声与振动控制 ›› 2017, Vol. 37 ›› Issue (3): 131-134.DOI: 10.3969/j.issn.1006-1355.2017.03.026

• 运载工具振动与噪声 • 上一篇    下一篇

车身结构及阻尼材料对汽车NVH性能影响研究

李直腾1，胡桂金2，欧阳军1   

  1. （ 1. 上汽通用五菱汽车股份有限公司技术中心，  广西  柳州  545007；
    2. 柳州五菱汽车工业有限公司技术中心，  广西  柳州  545007 ）
  • 收稿日期:2016-11-15 修回日期:2016-12-30 出版日期:2017-06-18 发布日期:2017-06-18
  • 通讯作者: 李直腾

Study on the Influence of Body Structures and Damping  Material Properties on NVH Performance of Vehicles

  • Received:2016-11-15 Revised:2016-12-30 Online:2017-06-18 Published:2017-06-18

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摘要：

为改善某车型的NVH性能，对其车身结构进行研究与应变能分析，对抗石击胶的喷涂与沥青阻尼板的厚度进行优化，并进行NVH性能测试。测试结果表明，噪声声压级有较明显降低。对测试结果进行对比分析，得出两种阻尼材料优化方案的特性，并给出最优组合方案。该分析测试方法能够对其他车型的NVH性能改善提供参考。

关键词: 振动与波, NVH, 应变能, 抗石击胶, 沥青阻尼板

Abstract:

In order to improve the NVH performance of a vehicle, the body structure has been discussed and its strain energy has been analyses. And then, the stone crash protection coating and bitumen deadener has been optimized to have NVH performance test. The test results showed that, the sound pressure level was obvious reduced after optimize. According to the contrastive analysis of the test result between, the features of the two damping materials had been got and the optimal combining scheme had been provided. This analysis and test method could be referenced to another vehicle.

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