Experimental and theoretical analysis for improvement of heavy-weight impact sound insulation of dry-type double floor structure using heavy/soft impact source

IF 3.4 2区物理与天体物理 Q1 ACOUSTICS

Applied Acoustics Pub Date : 2025-04-12 DOI:10.1016/j.apacoust.2025.110723

Da Cao , Yu Aida , Naohisa Inoue , Tetsuya Sakuma

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引用次数: 0

Abstract

The dry-type double floor structure is commonly installed in Japanese apartments. However, the heavy-weight impact sound insulation is often deteriorated due to the resonance effect of the air layer between the floor panels and the concrete slab. This study introduces a theoretical 3-degree-of-freedom (3-DOF) model to investigate the improvement of impact sound insulation for the double floor structure using rubber ball. First, a SDOF model for the collision of rubber ball is proposed that can reproduce the impact force exposure level accurately. Then, an experimental analysis is conducted using a specimen with particle board and support legs to obtain the support leg stiffness. It is validated that the proposed model for support legs can reproduce their transfer force characteristics accurately. Finally, the parametric study is performed to investigate the effects of varying support leg stiffness, air layer thickness, and floor panel density on the improvement of heavy-weight impact sound insulation. The results can be used to optimize the double floor structures to achieve better sound environment in residential buildings.

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采用重/软冲击源改善干式双层结构重冲击隔声性能的实验与理论分析

干式双层结构通常安装在日本公寓中。然而，由于楼板与混凝土板之间空气层的共振效应，重型冲击隔声往往会恶化。本文引入理论三自由度模型，研究橡胶球对双层结构隔声性能的改善。首先，建立了橡胶球碰撞的SDOF模型，该模型能较准确地再现冲击力暴露水平；然后，采用带刨花板和支腿的试样进行试验分析，得到支腿刚度。验证了所建立的支撑腿模型能较准确地再现支撑腿的传递力特性。最后，进行了参数化研究，探讨了不同支撑腿刚度、空气层厚度和地板密度对重型碰撞隔声性能的影响。研究结果可用于住宅双层结构的优化，以获得更好的声环境。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Acoustics 物理-声学

CiteScore

7.40

自引率

11.80%

发文量

618

审稿时长

7.5 months

期刊介绍： Since its launch in 1968, Applied Acoustics has been publishing high quality research papers providing state-of-the-art coverage of research findings for engineers and scientists involved in applications of acoustics in the widest sense. Applied Acoustics looks not only at recent developments in the understanding of acoustics but also at ways of exploiting that understanding. The Journal aims to encourage the exchange of practical experience through publication and in so doing creates a fund of technological information that can be used for solving related problems. The presentation of information in graphical or tabular form is especially encouraged. If a report of a mathematical development is a necessary part of a paper it is important to ensure that it is there only as an integral part of a practical solution to a problem and is supported by data. Applied Acoustics encourages the exchange of practical experience in the following ways: • Complete Papers • Short Technical Notes • Review Articles; and thereby provides a wealth of technological information that can be used to solve related problems. Manuscripts that address all fields of applications of acoustics ranging from medicine and NDT to the environment and buildings are welcome.