Modelling comparison for harmonic dynamic characteristics of a silicone-oil-filled rubber isolator and response analysis of a single DOF system

IF 0.5 4区工程技术 Q4 ENGINEERING, MECHANICAL

International Journal of Heavy Vehicle Systems Pub Date : 2023-01-01 DOI:10.1504/ijhvs.2023.133388

Xiaojuan Sun, Yumin Yang

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引用次数: 0

Abstract

In practical engineering applications, especially for earthmoving equipment, silicone-oil-filled rubber isolators have shown better vibration isolation performance than common rubber isolators. The silicone oil path presents complex dynamic properties. This paper mainly studies the dynamic characteristics of the isolator by modelling in different ways. Four viscoelastic models, namely Maxwell, fractional Maxwell, Zener and fractional Zener models, are established, respectively. The dynamic stiffness, storage stiffness, loss stiffness and loss factor are calculated, respectively. The results show that the fractional derivative models are more consistent with the experimental results. Moreover, the fractional Zener model can make up for lack of stiffness of the fractional Maxwell model. Finally, harmonic responses of a single degree-of-freedom (DOF) vibration isolation system are examined, where the fractional Zener model is used. The dynamic magnification factor, phase angle and force transmissibility are respectively calculated in the frequency domain and the effects of the design parameters are discussed.

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硅油填充橡胶隔振器谐波动态特性建模比较及单自由度系统响应分析

在实际工程应用中，特别是在土方设备中，硅油填充橡胶隔振器比普通橡胶隔振器表现出更好的隔振性能。硅油路径具有复杂的动态特性。本文主要通过不同的建模方法来研究隔振器的动态特性。分别建立了Maxwell模型、分数Maxwell模型、Zener模型和分数Zener模型四种粘弹性模型。分别计算了动力刚度、储存刚度、损耗刚度和损耗因子。结果表明，分数阶导数模型与实验结果更为吻合。分数阶齐纳模型可以弥补分数阶麦克斯韦模型的刚度不足。最后，研究了采用分数齐纳模型的单自由度隔振系统的谐波响应。在频域分别计算了动态放大系数、相位角和力传递率，并讨论了设计参数的影响。

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来源期刊

International Journal of Heavy Vehicle Systems 工程技术-工程：机械

CiteScore

1.30

自引率

0.00%

发文量

审稿时长

9 months

期刊介绍： IJHVS provides an authoritative source of information and an international forum in the field of on/off road heavy vehicle systems, including buses. It is a highly professional and refereed journal which forms part of the proceedings of the International Association for Vehicle Design. IAVD is an independent, non-profit, learned society which provides a forum for professionals in both industry and academic institutions to meet, exchange ideas and disseminate knowledge in the field of automotive engineering, technology, and management.