Design and verification of a magnetorheological elastomer-based vibration isolator with adjustable stiffness

被引:0
作者
Yu, Changheng [1 ,2 ]
Yao, Jianfei [1 ,2 ,3 ]
Jiao, Shiwen [1 ,2 ]
Li, Dacheng [4 ,5 ]
机构
[1] Beijing Univ Chem & Technol, Sch Mech & Elect Engn, Beijing 100029, Peoples R China
[2] Beijing Univ Chem Technol, State Key Lab High End Compressor & Syst Technol, Beijing 100029, Peoples R China
[3] Beijing Univ Chem Technol, Key Lab Engine Hlth Monitoring Control & Networkin, Minist Educ, Beijing 100029, Peoples R China
[4] Univ Birmingham, Sch Chem Engn, Birmingham B15 2TT, England
[5] Univ Birmingham, Birmingham Ctr Energy Storage, Birmingham B15 2TT, England
基金
中国国家自然科学基金;
关键词
Vibration; Isolator; Magnetorheological elastomer (MRE); Vibration suppression; MECHANICAL-PROPERTIES;
D O I
10.1016/j.istruc.2025.108762
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
A magnetorheological elastomer (MRE) - based vibration isolator with adjustable stiffness is designed in this work. The core component of the isolator is MRE, whose magneto-induced modulus is altered by controlling the voltage of the coils, thereby adjusting the magnetic field surrounding the MRE to achieve stiffness variation. A new arrangement scheme of MRE utilizing a sliding helical drive is introduced, which converts linear motion into rotational movement, inducing both compression and torsional deformation in the MRE. The magnetic circuit, along with the generation and distribution of magnetic field within the device, is thoroughly analyzed. The structural form and parameters of the device are optimized. A prototype of the MRE-based isolator was developed, and a test rig was built to verify its performance. The results demonstrate that the MRE-based isolator exhibits frequency shift characteristics and achieves significant vibration reduction within specific frequency bands. The vibration isolator shows promising potential for vibration reduction in equipment used in transportation, industrial production, aerospace, and other fields.
引用
收藏
页数:14
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