A wide-range variable stiffness mechanism for semi-active vibration systems

Tai Hsun Wu, Chao Chieh Lan

研究成果: Article同行評審

32 引文 斯高帕斯(Scopus)


This paper presents the design and experiment of a variable stiffness mechanism (VSM) for semi-active vibration systems. Compared with vibration isolators or absorbers with constant stiffness elements, the use of a variable stiffness element can adapt to the variation in disturbance frequency or load. The idea of the proposed VSM is to adjust the symmetric rotation of two parallel connected springs. The output force-to-displacement curve can exhibit zero to very large stiffness depending on the rotation amount of the springs. Infinite stiffness is further achieved by using mechanical stoppers to constrain the displacements of the springs. To reduce the VSM size and complexity, specifically designed planar springs are proposed to replace commercially available coil springs. Force and stiffness analyses are presented to design a VSM with the largest stiffness variation. The effects of various parameters on the stiffness variation are discussed. Finally, a prototype and its associated experiments are presented to demonstrate the vibration absorption performance against various disturbance frequencies.

頁(從 - 到)18-32
期刊Journal of Sound and Vibration
出版狀態Published - 2016 2月 17

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學
  • 材料力學
  • 聲學與超音波
  • 機械工業


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