Research on dynamics of the bistable electromagnetic vibration absorber with nonlinear damping

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (17) : 91-96.

LIU Li-lan, REN Bo-lin, ZHU Guo-dong, YANG Qian-qian

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Abstract

The nonlinear damping is added into the bistable electromagnetic vibration harvester. The bistable electromagnetic vibration energy harvester with nonlinear damping as a nonlinear vibration absorber is put forward in the paper. The mechanical and mathematical model of the main system and the bistable vibration absorber with nonlinear damping is established. The bifurcation diagram of the nonlinear vibration absorber and nonlinear damping is obtained. The vibration effect of the main system with bistable vibration absorber with nonlinear damping is superior to that with linear damping by means of simulation, especially in the resonance region. Furthermore, the relationship curve of the vibration energy of the main system and the bistable vibration absorber and nonlinear damping is obtained. The influence laws of the nonlinear damping on the vibration energy of the main system and average output power are obtained. The above research results can provide a reference for the study of the bistable vibration absorber.

Key words

nonlinear damping / bistable vibration absorber / resonance / average energy / average output power

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LIU Li-lan, REN Bo-lin, ZHU Guo-dong, YANG Qian-qian. Research on dynamics of the bistable electromagnetic vibration absorber with nonlinear damping[J]. Journal of Vibration and Shock, 2017, 36(17): 91-96

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