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Parameters Optimization for a Kind of Dynamic Vibration Absorber with Negative Stiffness

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  • Yongjun Shen
  • Xiaoran Wang
  • Shaopu Yang
  • Haijun Xing

Abstract

A new type of dynamic vibration absorber (DVA) with negative stiffness is studied in detail. At first, the analytical solution of the system is obtained based on the established differential motion equation. Three fixed points are found in the amplitude-frequency curves of the primary system. The design formulae for the optimum tuning ratio and optimum stiffness ratio of DVA are obtained by adjusting the three fixed points to the same height according to the fixed-point theory. Then, the optimum damping ratio is formulated by minimizing the maximum value of the amplitude-frequency curves according to optimization principle. According to the characteristics of negative stiffness element, the optimum negative stiffness ratio is also established and it could still keep the system stable. In the end, the comparison between the analytical and the numerical solutions verifies the correctness of the analytical solution. The comparisons with three other traditional DVAs under the harmonic and random excitations show that the presented DVA performs better in vibration absorption. This result could provide theoretical basis for optimum parameters design of similar DVAs.

Suggested Citation

  • Yongjun Shen & Xiaoran Wang & Shaopu Yang & Haijun Xing, 2016. "Parameters Optimization for a Kind of Dynamic Vibration Absorber with Negative Stiffness," Mathematical Problems in Engineering, Hindawi, vol. 2016, pages 1-10, August.
    • Handle: RePEc:hin:jnlmpe:9624325
    DOI: 10.1155/2016/9624325
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    Cited by:

    1. Yuying Chen & Jing Li & Shaotao Zhu & Hongzhen Zhao, 2023. "Further Optimization of Maxwell-Type Dynamic Vibration Absorber with Inerter and Negative Stiffness Spring Using Particle Swarm Algorithm," Mathematics, MDPI, vol. 11(8), pages 1-28, April.

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