Parameter identification and NVH characteristic analysis of automotive suspension rubber bushing

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-05-02 DOI:10.1177/09544070241245537

Hao Chen, Chihua Lu, Zhien Liu

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引用次数: 0

Abstract

Accurate prediction of the dynamic stiffness of rubber bushings is crucial for optimizing vehicle vibration and noise performance. However, this task is highly challenging due to various influencing factors such as frequency and amplitude. Consequently, there has been limited research conducted in this area thus far. This paper presents a novel approach for predicting the dynamic stiffness of rubber bushings. The frequency and amplitude dependencies of rubber bushings were thoroughly investigated through dynamic loading tests. A comprehensive model for rubber bushings, incorporating parallel connections of elastic elements, friction elements, and higher-order fractional derivative viscous elements, was established. The model parameters were accurately identified using the GA-BP method. The results demonstrate that the proposed model exhibits a high level of precision in estimating dynamic stiffness across a frequency range of 0–200 Hz. In comparison to the conventional model, the proposed approach enables more precise computation of interior sound pressure response and enhances vehicle simulation accuracy.

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汽车悬架橡胶衬套的参数识别和 NVH 特性分析

准确预测橡胶衬套的动态刚度对于优化车辆振动和噪声性能至关重要。然而，由于频率和振幅等各种影响因素的存在，这项任务极具挑战性。因此，迄今为止在这一领域开展的研究十分有限。本文提出了一种预测橡胶衬套动态刚度的新方法。通过动态加载测试，对橡胶衬套的频率和振幅相关性进行了深入研究。建立了橡胶衬套的综合模型，其中包含平行连接的弹性元件、摩擦元件和高阶分数导数粘性元件。使用 GA-BP 方法精确确定了模型参数。结果表明，所提出的模型在 0-200 Hz 的频率范围内对动态刚度的估计具有很高的精确度。与传统模型相比，所提出的方法能够更精确地计算车内声压响应，并提高车辆仿真精度。

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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.