Multi-direction vibration isolation via transverse isotropy control of metal rubber

作     者：Ma, Yanhong Tang, Xiangxin Wang, Yongfeng Hong, Jie 

作者机构：Beihang Univ Res Inst Aeroengine Beijing 100191 Peoples R China Beihang Univ Sch Energy & Power Engn Beijing 100191 Peoples R China 

出 版 物：《SMART MATERIALS AND STRUCTURES》 (Smart Mater Struct)

年 卷 期：2025年第34卷第1期

页      面：015040-015040页

核心收录：

学科分类：08[工学] 0804[工学-仪器科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809 [52175072, 52075018] National Natural Science Foundation of China Academic Excellence Foundation of BUAA Fundamental Research Funds for the Central Universities 

主　　题：metal rubber transverse isotropy vibration isolation random vibration 

摘      要：Metal rubber (MR) is widely used for vibration isolation due to its high damping and designable stiffness, but the isolation efficiency is relatively low in the non-molding direction due to its transverse isotropy. In this paper, the transverse isotropy of MR is controlled by design of manufacturing parameters (wire diameter, spiral diameter and compression ratio), material parameter (relative density) and geometric structure, to improve the isolation efficiency in the non-molding direction. Firstly, the helix unit was adopted to establish the relation between the transverse isotropy of MR material and manufacturing parameters, and manufacturing parameters were designed to control the transverse isotropy of MR material. Next, based on parametric modeling and genetic algorithm, material parameters and geometric structure were optimized to control the transverse isotropy of MR isolator. Finally, the transverse isotropy of the designed MR isolator was tested by quasi-static experiments, and multi-direction vibration isolation performance was verified by random vibration experiments. It is demonstrated that the transverse isotropy is controlled efficiently, and the vibration isolation efficiencies of the proposed MR isolator are all up to 85% under 15-2000 Hz broadband random vibration in X, Y and Z directions.