Research on analysis and suppression of frameless door seal squeak noise based on stick-slip displacement

IF 3.4 2区物理与天体物理 Q1 ACOUSTICS

Applied Acoustics Pub Date : 2025-09-03 DOI:10.1016/j.apacoust.2025.111041

Zhong Yang , Luoxing Li , Ruyi Chen , Shuiping Liao , Huaquan Liu , Jichao Zhang

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引用次数: 0

Abstract

To address the issue of seal squeak noise in a frameless door vehicle on rough roads, this study establishes a mathematical model of sealing strip motion and analyzes the mechanism of noise generation. The analysis reveals that the dynamic displacement difference between the frameless door and the body frame induces stick–slip effects at the seal contact interface, and the resulting self-excited vibration is the root cause of the noise. Based on the kinematic characteristics of stick–slip motion, an innovative noise control strategy is proposed: by optimizing the geometric nonlinearity of the seal cross-section configuration and modifying the tribological properties of the surface coating material, the stick–slip triggering displacement is increased beyond the operational threshold, effectively suppressing vibration energy accumulation and reducing noise caused by frictional expansion and contraction of the sealing material. Bench test results demonstrate that the improved solution significantly mitigates self-excited vibration noise, providing both theoretical insights and practical engineering solutions for addressing NVH (Noise, Vibration, and Harshness) issues in frameless doors.

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基于粘滑位移的无框门密封噪声分析与抑制研究

针对某型无框车门汽车在崎岖路面上行驶时产生的密封吱嘎噪声问题，建立了密封条运动的数学模型，分析了密封条运动产生噪声的机理。分析表明，无框门与车身框架的动位移差在密封接触界面处产生粘滑效应，由此产生的自激振动是产生噪声的根本原因。基于粘滑运动的运动学特性，提出了一种创新的噪声控制策略：通过优化密封截面构型的几何非线性和改变表面涂层材料的摩擦学特性，将粘滑触发位移增加到工作阈值以上，有效抑制振动能量积累，降低密封材料摩擦膨胀和收缩引起的噪声。台架测试结果表明，改进后的解决方案显著减轻了自激振动噪声，为解决无框门的NVH（噪声、振动和粗糙度）问题提供了理论见解和实际工程解决方案。

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.