具有木棉纤维的ABA结构隔声性能试验与计算分析

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (6) : 159-165.

论文

康英姿1，杨金宝1，谢新星1，张曲2，上官文斌1

作者信息 +

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

Author information +

文章历史 +

摘要

前围隔音垫主要用于隔绝发动机的噪声，防止噪声传到乘客舱，其结构一般为ABA（吸声层-隔声层-吸声层）。ABA结构中吸声层（A）为多孔棉毡，由纤维材料制作而成。本文使用木棉纤维、超细纤维制作多孔棉毡，测试并对比两种棉毡的吸声系数。基于两种纤维制作ABA结构样件，并进行了隔振性能的测试。建立了ABA结构的隔声特性的计算模型，并验证模型的有效性。利用建立的模型，计算分析不同吸声层材料构成、不同厚度参数的ABA结构的隔声性能。

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.

导出引用

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[J]. Journal of Vibration and Shock, 2023, 42(6): 159-165

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