Vibration Isolation Characteristics Analysis of X-shaped Quasi-Zero Stiffness Vibration Isolator

doi:10.12068/j.issn.1005-3026.2020.05.009

Journal of Northeastern University Natural Science ›› 2020, Vol. 41 ›› Issue (5): 662-666.DOI: 10.12068/j.issn.1005-3026.2020.05.009

• Mechanical Engineering • Previous Articles Next Articles

Vibration Isolation Characteristics Analysis of X-shaped Quasi-Zero Stiffness Vibration Isolator

YAO Guo¹， YU Yong-heng¹， ZHANG Yi-min²， WU Zhi-hua¹

1.School of Mechanical Engineering & Automation， Northeastern University， Shenyang 110819， China；2. Equipment Reliability Institute， Shenyang University of Chemical Technology， Shenyang 110142， China.

Received:2019-09-05 Revised:2019-09-05 Online:2020-05-15 Published:2020-05-15
Contact: YAO Guo
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Abstract

Abstract:

An X-shaped structure is applied to quasi-zero stiffness isolator to improve its low frequency isolation performance. The dynamic equation of the system is established by using the Newton’s motion law. The amplitude-frequency response curves of the system are obtained by using the incremental harmonic balance method. The effect of equivalent reduced stiffness γ on system transmissibility is discussed. Research results show that the reasonable numerical interval of dimensionless pre-compression length of horizontal spring is (0， 2). In the resonant region， the increase of γ can significantly reduce the force transmissibility. At higher excitation frequencies， the effect of the change of γ on the vibration isolation performance of the system is weak. With the decrease of γ， the displacement transmissibility in the resonance region decreases sharply. In addition， the decrease of γ will also reduce the resonance frequency and make the jump phenomenon disappear. Therefore， the equivalent reduced stiffness γ of the X-shaped quasi-zero stiffness isolator is an ideal parameter which can effectively reflect the effect of low-frequency vibration isolation of the system. The effect of equivalent reduced stiffness γ is discussed in detail.

Key words: X-shaped structure, quasi-zero stiffness(QZS), vibration isolator, incremental harmonic balance method (IHB), equivalent reduced stiffness, transmissibility

CLC Number:

YAO Guo， YU Yong-heng， ZHANG Yi-min， WU Zhi-hua. Vibration Isolation Characteristics Analysis of X-shaped Quasi-Zero Stiffness Vibration Isolator[J]. Journal of Northeastern University Natural Science, 2020, 41(5): 662-666.

References

[1]Jing X，Zhang L，Feng X，et al.A novel bio-inspired anti-vibration structure for operating hand-held jackhammers［J］.Mechanical Systems and Signal Processing，2019，118:317-339.
[2]Naude A F，Snyman J A.Optimisation of road vehicle passive suspension systems.part 1.optimisation algorithm and vehicle model［J］.Applied Mathematical Modelling，2003，27(4):249-261.
[3]Kamesh D，Pandiyan R，Ghosal A.Passive vibration isolation of reaction wheel disturbances using a low frequency fiexible space platform［J］.Journal of Sound and Vibration，2012，331(6):1310-1330.
[4]Yao G C，Huang W.Performance of a guideway seismic isolator with magnetic springs for precision machinery［J］.Earthquake Engineering and Structural Dynamics，2010，38(2):181-203.
[5]Cheng C，Li S，Wang Y，et al.Force and displacement transmissibility of a quasi-zero stiffness vibration isolator with geometric nonlinear damping［J］.Nonlinear Dynamics，2016，87(4):1-13.
[6]Zhou J，Xu D，Bishop S.A torsion quasi-zero stiffness vibration isolator［J］.Journal of Sound and Vibration，2015，338:121-133.
[7]Sun X，Jing X.Analysis and design of a nonlinear stiffness and damping system with a scissor-like structure［J］.Mechanical Systems and Signal Processing，2016，66/67:723-742.
[8]Wu Z，Zhang Y，Yao G.Nonlinear primary and super-harmonic resonances of functionally graded carbon nanotube reinforced composite beams［J］.International Journal of Mechanical Sciences，2019，153/154:321-340.
[9]Mirzaei M，Kiani Y.Snap-through phenomenon in a thermally postbuckled temperature dependent sandwich beam with FG-CNTRC face sheets［J］.Composite Structures，2015，134:1004-1013.
[10]Lu Z，Brennan M J，Chen L.On the transmissibilities of nonlinear vibration isolation system［J］.Journal of Sound and Vibration，2016，375:28-37.
[15]关守平，房少纯.一种新型的区间-粒子群优化算法［J］.东北大学学报(自然科学版)，2012，33(10):1381-1384.(Guan Shou-ping，Fang Shao-chun.A new interval particle swarm optimization algorithm［J］.Journal of Northeastern University(Natural Science)，2012，33(10):1381-1384.)

Vibration Isolation Characteristics Analysis of X-shaped Quasi-Zero Stiffness Vibration Isolator

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