Test and calculation analysis of the sound insulation performance of an ABA structure containing kapok fiber
KANG Yingzi1,YANG Jinbao1,XIE Xinxing2,ZHANG Qu2,SHANGGUAN Wenbin1
1.School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641, China;
2.Ningbo Tuopu Group Co., Ltd., Ningbo 315800, China
Abstract:The sound insulation pad is mainly used to isolate the noise of engine and prevent it from reaching the passenger compartment. It is generally an ABA (absorption layer - insulation layer - absorption layer) structure. The absorption layer (A) in ABA structure is porous felt, which is often made of fibrous materials. In this paper, kapok fiber and superfine fiber are used to make porous felt. The sound absorption coefficients of two kinds of porous felt are tested and compared. Two kinds of fibers are used to make the ABA structure samples, and the sound insulation performances are tested. The calculation model of the sound insulation performance of ABA structure is established and the validity of the model is verified. The model is used to calculate and analyze the sound insulation performances of ABA structures with different material composition and thickness parameters.
康英姿1,杨金宝1,谢新星1,张曲2,上官文斌1. 具有木棉纤维的ABA结构隔声性能试验与计算分析[J]. 振动与冲击, 2023, 42(6): 159-165.
KANG Yingzi1,YANG Jinbao1,XIE Xinxing2,ZHANG Qu2,SHANGGUAN Wenbin1. Test and calculation analysis of the sound insulation performance of an ABA structure containing kapok fiber. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(6): 159-165.
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