Performance of the composite damping damper structure compose of metal rubber and silicone rubber
REN Zhiying1, YAO Jiecheng1, HUANG Wei2, ZHANG Bin1, LU Chunhong3, ZHONG Shuncong1
1.Institute of Metal Rubber and Vibration Noise,School of Mechanical Engineering and Automation,Fuzhou University, Fuzhou 350116, China;
2.Fujian Special Equipment Inspection and Research Institute, Fuzhou 350004, China;
3. College of Automotive Engineering,Hebei Vocational University of Industry and Technology, Shijiazhuang 050091, China)
Abstract:In the present work, a shock absorber structure suitable for the narrow space was designed, and the vibration reduction characteristics of metal rubber/silicone rubber (MR-SR) composite material was evaluated in depth based on a sine sweep test. Through comparison, it is found that the structures with different components possess unique mechanical properties. Among them, the pure metal rubber damping structure has excellent energy dissipation characteristics, while the MS-SR composite damping structure has a lower resonance frequency due to the interface friction between different materials. In addition, the single-factor control tests (core density, excitation force, and preload) were carried out for the MR-SR composite damping structure. It was found that increasing the density or preload would strengthen the stiffness of the product, resulting in the increase of the resonance frequency and resonance amplification factor, but the decrease of the loss factor. All these conclusions are validated from the microscale. According to the phenomenon of stiffness softening , damping strengthening and bending jump with positive and negative sweep frequency, the composite damping structure was proved to possess variable stiffness and damping characteristics and high order nonlinear stiffness characteristics. This study provides effective guidance for the design of materials and structures with excellent damping properties.
任志英1,尧杰程1,黄伟2,张彬1,路纯红3,钟舜聪1. 金属橡胶-硅橡胶复合阻尼结构的减振性能[J]. 振动与冲击, 2022, 41(24): 234-240.
REN Zhiying1, YAO Jiecheng1, HUANG Wei2, ZHANG Bin1, LU Chunhong3, ZHONG Shuncong1. Performance of the composite damping damper structure compose of metal rubber and silicone rubber. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(24): 234-240.
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