A study on sound insulation for sandwich structures with carbon fiber panel and aluminum honeycomb core

被引：0
|
作者：
Zhang C. [1 ]
Zhang J. [1 ]
机构：
[1] School of Locomotive and Vehicle Engineering, DalianJiaotong University, Dalian
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2020年 / 39卷 / 12期
关键词：
Aluminum honeycomb core; Carbon fiber panel; Complex structure; Finite element; Sound insulation;
D O I：
10.13465/j.cnki.jvs.2020.12.036
中图分类号：
学科分类号：
摘要：
Aluminum honeycomb sandwich composite structures are increasingly used in the aviation industry, high-speed trains and automobile bodies. Its sound insulation performance has an important impact on the cabin and interior noise. In this paper, a finite element model of sandwich composite structure with the carbon fiber panels and aluminum honeycomb core was established. The response of structures excited by acoustic loads was achieved by using of the finite element method, and the sound insulation performance of the composite structure was calculated and analyzed. The influence of panel layer number, laying angle, thickness of carbon fiber panel on sound insulation performance was analyzed and compared. The influence of thickness of aluminum honeycomb core layer and aluminum honeycomb wall thickness on sound insulation performance was also analyzed and compared. The results show that the sound insulation of aluminum honeycomb composite structure with carbon fiber panels is lower than that of aluminum honeycomb sandwich structure with the aluminium material panels at low frequencies smaller than 1 000 Hz. And at high frequencies, there is a much lower level of sound insulation at the sound insulation trough with the same panel thickness. Compared with the aluminum alloy panel, when the composite structure panel is made of carbon fiber composite material, the overall structure can be lightened and the sound insulation performance of the composite structure can be improved. The sound insulation of the composite structure is the best when the layers are laid at relative 90 degrees, with the increase of the thickness of the panel, the sound insulation level of the composite structure increases. When the total thickness of the panel layer remains unchanged, single-layer panels or panels with too many layers will reduce the sound insulation level. © 2020, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：265 / 271
页数：6
相关论文
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