期刊
SMART MATERIALS AND STRUCTURES
卷 26, 期 10, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-665X/aa81e8
关键词
magnetorheological elastomer; tuned mass damper; variable stiffness; natural frequency; conical
资金
- National Natural Science Foundation of China (NSFC) [51261120376, 51478088, 51378093]
Use of a variable stiffness tuned mass damper (VSTMD) is an effective approach to reduce the dynamic responses of a structure with shifting natural frequencies. Magnetorheological elastomer (MRE) isolators can be used to build VSTMD due to their tunable stiffness by applying a magnetic field. However, conventional MRE isolators show deformation limits, huge energy consumption and uneconomic production. Focused on developing a MRE VSTMD system to improve this situation, a conical MRE isolator has been proposed and tested. Compared to conventional MRE isolators, the conical isolator shows much higher efficiency, better overall stability, greater deformability and a larger tunable range. The experimental results indicate that the prototype can provide a 46.29% increase in frequency and a 75 N control force range with a 25W power source. The quick responding MRE VSTMD system has the potential to accurately provide the desired stiffness in two directions to achieve a better structure control.
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