Dynamic Characteristics of Exhaust Hanger Composed of Rubber and Thin Metal Ring

Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing Pub Date : 2006-09-15 DOI:10.1299/JSMEC.49.750

Kazunari Nakahara, N. Nakagawa, K. Ohta, T. Miyake, Ramanjaneyulu Kakarla

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引用次数: 3

Abstract

The dynamic characteristics of exhaust hangers for automotive use are studied for high frequencies at which the resonance vibration of the exhaust hangers occurs. A newly developed exhaust hanger composed of rubber and a thin metal ring is presented, which can provide a lower dynamic stiffness in a wide frequency range than an exhaust hanger made of solid rubber. A dynamic characterization testing and finite-element analysis of the exhaust hangers were carried out to clarify the frequency responses of dynamic stiffness in the high-frequency range. A method of treating the viscoelasticity of the rubber material using the finite-element method is proposed to predict the dynamic characteristics of the exhaust hangers. The finite-element method results show a good agreement with the experimental results for the frequency response of dynamic stiffness. Concerning the newly developed exhaust hanger, the effects of metal ring geometry and rubber hardness on the dynamic stiffness are examined to demonstrate the design principle for providing a low dynamic stiffness in a wide frequency range.

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橡胶-金属薄环排气吊架动态特性研究

研究了汽车排气悬架在高频共振振动下的动态特性。介绍了一种新型的由橡胶和金属环组成的排气吊架，该吊架在较宽的频率范围内具有较低的动刚度。对排气吊架进行了动态特性测试和有限元分析，以明确其在高频范围内的动态刚度频率响应。提出了一种用有限元法处理橡胶材料粘弹性的方法来预测排气吊架的动态特性。有限元计算结果与试验结果吻合较好。针对新研制的排气吊架，研究了金属环几何形状和橡胶硬度对其动刚度的影响，论证了在宽频率范围内提供低动刚度的设计原则。

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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Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing

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