Design and modeling of a quasi-zero stiffness isolator for different loads

Zheng, Yawei; Shangguan, Wen‐Bin; Yin, Z.; Liu, Xiao‐Ang

doi:10.1016/j.ymssp.2022.110017

Cited by 27 publications

(1 citation statement)

References 42 publications

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“…The dynamic test of the prototype shows that the test results are consistent with the theoretical results. Zheng et al [51] proposed a QZS isolator consisting of N elements in series, which has multiple QZS regions and can also achieve low-frequency isolation with different loads.…”

Section: Introductionmentioning

confidence: 99%

Quasi-Zero Stiffness Isolator Suitable for Low-Frequency Vibration

et al. 2023

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This paper proposes a quasi-zero stiffness (QZS) isolator based on an inclined trapezoidal beam to explore its advantages in low-frequency passive vibration isolation. The nonlinear stiffness of the inclined trapezoidal beam due to the buckling effect is investigated through finite element simulation, and a linear positive stiffness spring is connected in parallel to form a QZS isolator with high-static and low-dynamic stiffness performance. The natural frequency of the isolator in the QZS region is simulated and analyzed, and the dynamic response of the QZS isolator under different damping ratios, excitation and load conditions is explored. The prototype of the QZS isolator was manufactured, and a static compression experiment was conducted to obtain its nonlinear stiffness. The dynamic experiment results verify the correctness of the simulation conclusions. The simulation and experimental data demonstrate that the QZS isolator has the characteristics of lower initial isolation frequency compared with the equivalent linear isolator. The proposed QZS isolator has an initial isolation frequency of 2.91 Hz and achieves a 90% isolation efficiency at 7.02 Hz. The proposed QZS isolator has great application prospects and can provide a reference for optimizing low-frequency or ultra-low-frequency isolators.

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Section: Introductionmentioning

confidence: 99%

Quasi-Zero Stiffness Isolator Suitable for Low-Frequency Vibration

et al. 2023

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Near resonance vibration isolation on a levered-dual response (LEDAR) Coulomb-damped system by differential preloads/offsets in linear springs

Toluwaloju,

Thein,

Halim

2024

Appl. Math. Mech.-Engl. Ed.

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A low-frequency and broadband wave-insulating vibration isolator based on plate-shaped metastructures

Wei,

Guan,

Fang

2024

Appl. Math. Mech.-Engl. Ed.

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A metamaterial vibration isolator, termed as wave-insulating isolator, is proposed, which preserves enough load-bearing capability and offers ultra-low and broad bandgaps for greatly enhanced wave insulation. It consists of plate-shaped metacells, whose symmetric and antisymmetric local resonant modes offer several low and broad mode bandgaps although the complete bandgap remains high and narrow. The bandgap mechanisms, vibration isolation properties, effects of key parameters, and robustness to complex conditions are clarified. As experimentally demonstrated, the wave-insulating isolator can improve the vibration insulation in the ranges of [50 Hz, 180 Hz] and [260 Hz, 400 Hz] by 15 dB and 25 dB, respectively, in contrast to the conventional isolator with the same first resonant frequency.

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Design and modeling of a quasi-zero stiffness isolator for different loads

Cited by 27 publications

References 42 publications

Quasi-Zero Stiffness Isolator Suitable for Low-Frequency Vibration

Quasi-Zero Stiffness Isolator Suitable for Low-Frequency Vibration

Near resonance vibration isolation on a levered-dual response (LEDAR) Coulomb-damped system by differential preloads/offsets in linear springs

A low-frequency and broadband wave-insulating vibration isolator based on plate-shaped metastructures

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