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Purpose <p>This study proposes a lightweight tuned viscous mass damper with negative stiffness (LwTVMDNS), which integrates a triple damping enhancement mechanism via the inerter, negative stiffness, and mechanical amplification. The device can be degraded into forms such as tuned viscous mass damper (TVMD), negative stiffness amplification damper (NSAD), and TVMDNS. The aim is to achieve superior vibration mitigation and damping efficiency under harmonic and stochastic excitations while enabling cost-effective and lightweight designs with ultra-low design parameters.</p> Methods <p>An analytical optimization method for stochastic vibration control is developed. The vibration control performance of LwTVMDNS and its degenerate forms is evaluated under harmonic and typical stochastic excitation. The triple amplification mechanism enhances the deformation of the damping element, allowing performance requirements to be met with low design parameters. An amplification ratio corresponding to B2=2 is recommended to balance lightweight performance, mechanical feasibility, and longevity. Numerical simulations of multi-degree-of-freedom structures under various seismic records are conducted to validate feasibility and effectiveness.</p> Results <p>The LwTVMDNS demonstrates superior vibration mitigation and damping efficiency compared to its degenerate forms. The triple amplification mechanism ensures structural performance is satisfied with appropriate amplifying ratios, achieving damping enhancement with minimal design parameters. The recommended amplification ratio (B<sup>2</sup>=2) provides an optimal trade-off between performance gains and mechanical practicality. Numerical simulations confirm the advantages of LwTVMDNS in lightweight design and cost-efficient vibration control under diverse seismic conditions.</p> Conclusion <p>The LwTVMDNS offers a feasible and effective solution for lightweight and economical vibration control in structures. Its triple damping enhancement mechanism, combined with the proposed analytical optimization method, enables high performance under stochastic and harmonic excitations. The device is particularly suitable for applications where cost efficiency and lightweight design are critical, as validated by its robust performance in multi-degree-of-freedom structural simulations.</p>

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A Lightweight Tuned Viscous Mass Damper with Negative Stiffness for Stochastic Vibration Mitigation via Triple Damping Enhancement

  • 期刊论文

  • 发表日期：

    2025年11月21日

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  • Ruoyu Zhang,
  • Mingfeng Huang

摘要

Purpose

This study proposes a lightweight tuned viscous mass damper with negative stiffness (LwTVMDNS), which integrates a triple damping enhancement mechanism via the inerter, negative stiffness, and mechanical amplification. The device can be degraded into forms such as tuned viscous mass damper (TVMD), negative stiffness amplification damper (NSAD), and TVMDNS. The aim is to achieve superior vibration mitigation and damping efficiency under harmonic and stochastic excitations while enabling cost-effective and lightweight designs with ultra-low design parameters.

Methods

An analytical optimization method for stochastic vibration control is developed. The vibration control performance of LwTVMDNS and its degenerate forms is evaluated under harmonic and typical stochastic excitation. The triple amplification mechanism enhances the deformation of the damping element, allowing performance requirements to be met with low design parameters. An amplification ratio corresponding to B2=2 is recommended to balance lightweight performance, mechanical feasibility, and longevity. Numerical simulations of multi-degree-of-freedom structures under various seismic records are conducted to validate feasibility and effectiveness.

Results

The LwTVMDNS demonstrates superior vibration mitigation and damping efficiency compared to its degenerate forms. The triple amplification mechanism ensures structural performance is satisfied with appropriate amplifying ratios, achieving damping enhancement with minimal design parameters. The recommended amplification ratio (B2=2) provides an optimal trade-off between performance gains and mechanical practicality. Numerical simulations confirm the advantages of LwTVMDNS in lightweight design and cost-efficient vibration control under diverse seismic conditions.

Conclusion

The LwTVMDNS offers a feasible and effective solution for lightweight and economical vibration control in structures. Its triple damping enhancement mechanism, combined with the proposed analytical optimization method, enables high performance under stochastic and harmonic excitations. The device is particularly suitable for applications where cost efficiency and lightweight design are critical, as validated by its robust performance in multi-degree-of-freedom structural simulations.