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发布时间：2019-03-11

论文类型：期刊论文

发表时间：2017-10-01

发表刊物：SMART MATERIALS AND STRUCTURES

收录刊物：EI、SCIE、Scopus

卷号：26

期号：10

ISSN号：0964-1726

关键字：magnetorheological elastomer; tuned mass damper; variable stiffness; natural frequency; conical

摘要：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.