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Dynamics of a novel bistable mechanism with mechanical-magnetic coupled structure

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Abstract

Bistable mechanisms are very appealing in the design of valves, switches and actuators. By utilizing the nonlinear magnetic structure and elastic cantilevers, a novel bistable mechanism was designed. Based on the magnetic charge model and material mechanics theory, the nonlinear force during the snap-through procedure was calculated accurately, which is in accordance with that obtained by the experiments. In addition, the bistable characteristics including the threshold snapping force, the traveling range, and stable positions can be adjusted by changing the structure parameters and the relative distance among the magnets. The dynamic analysis shows that the bistable structure has a good frequency distinguishing capacity for mechanical shock pulses.

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Authors and Affiliations

  1. College of Automotive Engineering, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian, 116024, China

    Jian Zhao  (赵剑) & Ren-jing Gao  (高仁璟)

  2. State Key Laboratory of Structural Analysis for Industrial Equipment (Dalian University of Technology), Dalian, 116024, China

    Jian Zhao  (赵剑), Yu Huang  (黄毓) & Ren-jing Gao  (高仁璟)

  3. Key Laboratory of Wide Band-Gap Semiconductor Materials and Devices of Ministry of Education (School of Microelectronics, Xidian University), Xi’an, 710071, China

    Jian Zhao  (赵剑) & Yin-tang Yang  (杨银堂)

Authors
  1. Jian Zhao  (赵剑)
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  2. Yu Huang  (黄毓)
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  3. Yin-tang Yang  (杨银堂)
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  4. Ren-jing Gao  (高仁璟)
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Corresponding author

Correspondence to Jian Zhao  (赵剑).

Additional information

Foundation item: Project(51105059) supported by the National Natural Science Foundation of China; Project(20100041120019) supported by the Doctoral Fund of Ministry of Education of China; Project(2011CB610304) supported by the National Basic Research Program of China; Project(60725415) supported by the National Natural Science Foundation of China for Distinguished Young Scholars; Project(201003665) supported by the Fundamental Research Funds for the Central Universities of China

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Zhao, J., Huang, Y., Yang, Yt. et al. Dynamics of a novel bistable mechanism with mechanical-magnetic coupled structure. J. Cent. South Univ. 19, 1853–1858 (2012). https://doi.org/10.1007/s11771-012-1219-7

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  • DOI: https://doi.org/10.1007/s11771-012-1219-7

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