A study on the influence of particle kinematics on the energy dissipation characteristics of dampers

DUAN Yongqiang,YIN Zhongjun,CHEN Bing

Journal of Vibration and Shock ›› 2020, Vol. 39 ›› Issue (4) : 215-221.

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Journal of Vibration and Shock ›› 2020, Vol. 39 ›› Issue (4) : 215-221.

A study on the influence of particle kinematics on the energy dissipation characteristics of dampers

  • DUAN Yongqiang,YIN Zhongjun,CHEN Bing
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Abstract

To explore the energy dissipation mechanism of a particle damper, a cylindrical particle damper simulation model was established based on the discrete element method theory.The variation of the motion pattern of the particles in the damper under different excitation conditions was studied.Through the energy analysis of the particles in the six motion modes, it was found that the different motion modes of the particles will affect the energy consumption frequency and the energy consumption amplitude of the damper in different impact forms, thus affect the overall energy consumption of the damper.Based on the above conclusions, a bellow type of particle dampers which can significantly improve the particle motion pattern was proposed.Its energy consumption is significantly increased compared with traditional cylindrical particle dampers.The relevant conclusions were verified and provide a theoretical reference for the optimal design of particle dampers in applications.

Key words

particle damper / kinematic behavior / impact modes / energy consumption

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DUAN Yongqiang,YIN Zhongjun,CHEN Bing. A study on the influence of particle kinematics on the energy dissipation characteristics of dampers[J]. Journal of Vibration and Shock, 2020, 39(4): 215-221

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