文献类型：期刊文献

英文题名：Experiment and simulation research on sound insulation performance of magnesium alloy dash panel

作者：Peng, Jin-shuan[1];Zhao, Yang[2];Lin, Lizong[3];Gao, Bin[4]

机构：[1]Chongqing Jiaotong Univ, Chongqing Key Lab Traff Syst & Safety Mt Cities, Chongqing 400074, Peoples R China;[2]Jiangmen Polytech, Elect & Informat Technol Dept, Jiangmen 529090, Peoples R China;[3]E China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[4]Huaqiao Univ, Coll Mech & Automat, Xiamen, Peoples R China

年份：2015

卷号：17

期号：7

起止页码：3404

外文期刊名：JOURNAL OF VIBROENGINEERING

收录：;EI(收录号：20155001656731);WOS:【SCI-EXPANDED(收录号:WOS:000365800100002)】；

语种：英文

外文关键词：magnesium alloy dash panel; FE-SEA method; structure-acoustic coupling method; sound insulation performance; sound package

摘要：The finite element model of dash panel was built and its reliability was then verified by the comparison between the simulation and the experimental results. Subsequently, FE-SEA simulation model of dash panel was built and then compared with the structure-acoustic coupling method as well as the experimental results. As a result, the superiority and reliability of FE-SEA method for predicting the sound insulation performance of dash panel are shown. In addition, the sound insulation performance of the original steel dash panel was also calculated and compared with magnesium alloy dash panel, and the results show that the sound insulation performance of magnesium alloy dash panel has reached the level of steel dash panel. The mentioned analysis shows that magnesium alloy material has a low noise characteristic and it can also achieve light-weight. Then, sound package was applied to dash panel to calculate its sound insulation performance, and the results are found that sound insulation performance is not significantly improved at low-frequency range. Reversely, it will be reduced with increasing of sound package thickness. However, improvement of sound insulation performance is very obvious at high frequency range. In order to evaluate the comprehensive performance in terms of noise reduction and lightweight, noise reduction efficiency was proposed and calculated. This research does also provide a reference for the acoustic design of magnesium alloy components.