Vibration Isolation Performance Study of Shape Memory Alloy-Triple Spring Quasi-Zero-Stiffness System under Base Excitation

Lianjie Ding

doi:10.54691/qfk61797

Authors

Lianjie Ding

DOI:

https://doi.org/10.54691/qfk61797

Keywords:

Low-frequency vibration isolation; shape memory alloy spring; triple spring quasi-zero stiffness isolation; amplitude-frequency characteristics.

Abstract

In many critical scientific and engineering fields, controlling low-frequency vibrations is essential. The existing triple spring quasi-zero stiffness (QZS) isolator shows effective performance in low-frequency vibration control; however, its limited QZS range leads to reduced isolation bandwidth and deteriorated performance when structural displacement responses are large. To address this issue, this study proposes an improved QZS isolation system by partially replacing the vertical positive stiffness spring with a shape memory alloy (SMA) spring. The secondary stiffness characteristics and pseudoelasticity of the SMA spring are utilized to expand the QZS working range. The dynamic equations of the modified system, which exhibit piecewise nonlinear characteristics, are solved using the averaging method and validated numerically. The influence of various SMA parameters on the dynamic response of the improved system is analyzed. The results demonstrate that the SMA-enhanced triple spring QZS isolator exhibits a broader QZS range and superior low-frequency vibration isolation performance compared to the traditional triple spring QZS isolator.

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References

[1] Zhang J. Research on Low Frequency Vibration and Active Control of Large Power System Shaft System [J]. Journal of chinese society of power engineering, 2004, (04): 457-460, 465.

[2] Jing X,Yu W,Li Q. Design of a quasi-zero-stiffness based sensor system for the measurement of absolute vibration displacement of moving platforms[J], 2016.

[3] Molyneux,W. G. The Support of an Aircraft for Ground Resonance Tests: A Survey of Available Methods[J], 1958.

[4] Alabuzhev PM,Rivin EI. Vibration protecting and measuring systems with quasi-zero stiffness[J].

[5] Platus DL. Negative-stiffness-mechanism vibration isolation systems[J], 1999.

[6] Peng X, Zhang CX. Static and linear dynamic characteristics analysis of a quasi zero stiffness isolation system [J]. Chinese Quarterly of Mechanics, 2012, 33(03): 492-498.

[7] Peng X, Cheng S. Preliminary exploration of the working principle and application of negative stiffness [J]. Journal of hunan university (Natural Sciences), 1992, (04): 89-94.

[8] Peng X, Li DZ. Design of quasi zero stiffness isolator and its elastic characteristics [J]. Journal of Vibration, Measurement & Diagnosis, 1997, (04): 44-46.

[9] Lee CM,Goverdovskiy VN,Samoilenko SB. Prediction of non-chaotic motion of the elastic system with small stiffness[J], 2004.

[10] Virgin LN,Santillan ST,Plaut RH. Vibration isolation using extreme geometric nonlinearity[J], 2008.

[11] Hang JS, Song JG. Analysis of Nonlinear Isolation Characteristics of a Surface Spring Roller Mechanism [J], 2019.

[12] Carrella A,Brennan MJ,Waters TP. Static analysis of a passive vibration isolator with quasi-zero-stiffness characteristic[J], 2007.

[13] Carrella A,Brennan MJ,Waters TP. On the design of a high-static-low-dynamic stiffness isolator using linear mechanical springs and magnets. [In special Issue: EUROMECH colloquium 483, Geometrically non-linear vibrations of structures][J], 2008.

[14] Tengfei Chen,Yuxuan Zheng,Linhui Song, et al. Design of a new quasi-zero-stiffness isolator system with nonlinear positive stiffness configuration and its novel features[J]. Springer Science and Business Media Llc, 2022, 111(6): 5141-5163.

[15] Qiang Wang,JiaXi Zhou,Kai Wang, et al. Design and experimental study of a compact quasi-zero-stiffness isolator using wave springs[J]. Springer Science and Business Media Llc, 2021, 64(10): 2255-2271.

[16] Zhang Z,Feng L,Sheng P, et. al. A modified one-dimensional constitutive model of pseudoelastic SMAs and its application in simulating the force-deformation relationship of SMA helical springs[J], 2020.