Dynamic stiffness analysis of a nonlinear vibration isolation model with asymmetrical and quasi-zero stiffness characteristics

Le Thanh Danh

Abstract


As well known, nonlinear vibration isolation models may offer potential effectiveness for isolating low frequency vibrations. Therefore, this paper will introduce a nonlinear vibration isolator model, featuring asymmetrical and quasi-zero stiffness characteristics shorten AQZSI. Firstly, the physical model of the nonlinear vibration oscillation is shown, including a semicircular cam-roller and wedge-roller mechanism, in which cylinder adding auxiliary tank is worked as an elastic element. Secondly, its dynamic stiffness is built and numerically simulated. Based on this, the parameters which effect on dynamic stiffness of the system are identified. This study is the major premise not only to analyze the dynamic response but also to design a useful quasi-zero stiffness vibration isolator.


Keywords


Asymmetrical stiffness, Quasi-zero stiffness, Vibration Isolation

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References


Mengnan Sun, G. S., “Effect of negative stiffness mechanism in a vibration isolator with asymmetric and high-static-low-dynamic stiffness”, Mechanical Systems and Signal Processing, 388-407, 2019.

Xiuting Sun, X. J., “Vibration isolation via a scissor-like structured platform”, Journal of Sound and Vibration, 2404-2420, 2014.

Xiuting Sun, X. J., “A nonlinear vibration isolator achieving high-static-low-dynamic-stiffness and tunable anti-resonance frequency band”, Mechanical Systems and Signal Processing, 04-011, 2016.

Jiaxi Zhou, X. W., “Nonlinear dynamic characteristics of a quasi-zero stiffness vibration isolator with cam-roller-spring mechanisms”, Journal of Sound and Vibration, 53-692, 015.

Diego Francisco L.R., N. S., “An experimental nonlinear low dynamic stiffness device for shock isolation”, Journal of Sound and Vibration, 1-13, 2015.

Yisheng Zheng, X. Z., “Design and experiment of a high-static-low-dynamic stiffness isolator using a negative stiffness magnetic spring”, Journal of Sound and Vibration, 31-52, 2016.

Yisheng Zheng, Q. P.,” A Stewart isolator with high-static-low- dynamic stiffness struts based on negative stiffness magnetic springs”, Journal of Sound and Vibration, 390-408, 2018.

Feng Zhang, S. S., “Active-passive hybrid vibration isolation with magnetic negative stiffness isolator based on Maxwell normal stress”, Mechanical Systems and Signal Processing, 244-263, 2019.

Thanh Danh Le, M. T., “Improvement of Vibration isolation performance of isolation system using negative stiffness structure”, Vol.21, p. 1561, 2016.

Thanh Danh Le, K. K. Ahn, “Experimental investigation of a vibration isolation system using negative stiffness structure”, International Journal of Mechanical Sciences, 99-112, 2013.

Zhan Hu, X. W., “Theoretical analysis and experimental identification of a vibration isolator with widely-variable stiffness” Journal of Vibration and Acoustics, 1-21, 2018.

Shaogang Liu, L. F., “A real-time controllable electromagnetic vibration isolator base on magneto-rheological elastomer with quasi zero stiffness characteristics, Journal of Smart Material and Structures, 1-28, 2019.

Xingtian Liu, X. H., “On the characteristics of a quasi-zero stiffness isolator using Euler buckled beam as negative stiffness corrector”, Journal of Sound and Vibration, 3359-3376, 2013.

Kan Ye, J. J., “Design of a quasi-zero stiffness isolation system for supporting different loads”, Journal of Sound and Vibration, 21, 2020.




DOI: http://dx.doi.org/10.30811/jpl.v19i1.1956

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