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Objective <p>In this paper, a novel Quasi-zero stiffness (QZS) vibration isolator (VI) is proposed where the negative stiffness is realized by biaxial slider-connector-springs, which presents superior static load bearing and dynamic vibration isolation capacity compared with its uniaxial counterpart.</p> Methodology <p>The outperformance of the proposed VI can be guaranteed only when two independent structural parameters satisfy a certain criterion, according to static analysis. On the other hand, dynamic analysis is performed to validate the superiority of the novel QZS VI in terms of force transmissibility and isolation frequency band. Careful consideration is given to the selection of structural parameters, according to the limitation for displacement amplitude in real engineering. Finally, experimental prototype of the novel QZS VI is conducted to confirm its advantage compared to the previous VI.</p> Application <p>The results present inspiration for development of new high-static-low-dynamic-stiffness (HSLDS) with ultralow frequency VI characteristics.</p>

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A Novel Quasi-Zero Stiffness Vibration Isolator Via Biaxial Slider-Connector-Spring Structure

  • 期刊论文

  • 发表日期：

    2025年6月20日

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  • Yifan Liu,
  • Xinyao Zhu,
  • Wenkai Liu,
  • Wei Xu,
  • Chicheng Ma,
  • Weijie Ma,
  • Haowen Liu,
  • Tianyan Liu

摘要

Objective

In this paper, a novel Quasi-zero stiffness (QZS) vibration isolator (VI) is proposed where the negative stiffness is realized by biaxial slider-connector-springs, which presents superior static load bearing and dynamic vibration isolation capacity compared with its uniaxial counterpart.

Methodology

The outperformance of the proposed VI can be guaranteed only when two independent structural parameters satisfy a certain criterion, according to static analysis. On the other hand, dynamic analysis is performed to validate the superiority of the novel QZS VI in terms of force transmissibility and isolation frequency band. Careful consideration is given to the selection of structural parameters, according to the limitation for displacement amplitude in real engineering. Finally, experimental prototype of the novel QZS VI is conducted to confirm its advantage compared to the previous VI.

Application

The results present inspiration for development of new high-static-low-dynamic-stiffness (HSLDS) with ultralow frequency VI characteristics.