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Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 33 , No. 2

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[ Article ]
Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 33, No. 1, pp. 18-26
Abbreviation: J. Korean Soc. Manuf. Technol. Eng.
ISSN: 2508-5107 (Online)
Print publication date 15 Feb 2024
Received 19 Dec 2023 Revised 07 Jan 2024 Accepted 09 Jan 2024
DOI: https://doi.org/10.7735/ksmte.2024.33.1.18
QZS특성과 고하중 지지 성능을 갖는 진동절연장치
전석춘^a ; 김기성^a ; 신응수^a^{, *}

Vibration Isolator with Quasi-Zero Stiffness Characteristics and High Load-Carrying Capacity
Seok-Chun Jeon^a ; Kee-Sung Kim^a ; Eung-Soo Shin^a^{, *}
aDepartment of Mechanical Engineering, Chungbuk National University
Correspondence to : ^*Tel.: +82-43-261-3159 E-mail address: esshin@cbnu.ac.kr (Eung-Soo Shin).

Abstract

A vibration isolator is proposed using a simple QZS combination of the extension and compression springs. A parameter study is conducted to determine the relationship between the QZS performance and the design parameters of the spring and linkage. Notably, the QZS convergence and load-carrying capacity are significantly affected by both the spring and linkage parameters. A prototype of a QZS vibration isolator is developed and its performance is experimentally validated through the displacement transmissibility under base excitation. Notably, the QZS characteristics significantly reduced vibrations for a whole range of the excitation frequency and also suppressed vibrations around peaks by as much as 70%. The vibration isolation is expected to be further enhanced by reducing errors caused in the manufacturing process of QZS springs.


Keywords: Quasi-zero stiffness (QZS), Vibration isolation, High static load, Spring free length, Displacement transmissibility

References


1.	Perez-Aracil, J., Pereira, E., Dıaz, I., Reynolds, P., 2021, Passive and Active Vibration Isolation under Isolator Structure Interaction: Application to Vertical Excitations, Meccanica, 56 1921-1935.
2.	Min, C., Dahlmann, M., Sattel, T., 2021, Numerical and Experimental Investigation of a Semi-Active Vibration Control System by Means of Vibration Energy Conversion, Energies, 14:16 5177.
3.	Ma, Z., Zhou, R., Yang, Q., 2022, Recent Advances in Quasi-Zero Stiffness Vibration Isolation Systems: An Overview and Future Possibilities, Machines, 10:9 813.
4.	Yan, G., Zou, H., Wang, S., Zhao, L., Gao, Q., Tan, T., Zhang, W., 2020, Large Stroke Quasi-zero Stiffness Vibration Isolator using Three-link Mechanism, J. Sound Vibr., 478 115344.
5.	Carrella, A., Brennan, M., Waters, T., 2017, Static Analysis of a Passive Vibration Isolator with Quasi-zero-stiffness Characteristic, J. Sound Vibr., 301:3-5 678-689.
6.	Rifaie, M., Abdulhadi, H., Mian, A., 2022, Advances in Mechanical Metamaterials for Vibration Isolation: A Review, Adv. Mech. Eng., 14:3 1-20.
7.	Gatti, G., Shaw, A., Goncalves, P., Brennan, M., 2022, On the Detailed Design of a Quasi-zero Stiffness Device to Assist in the Realisation of a Translational Lanchester Damper, Mech. Syst. Signal Proc., 164 108258.
8.	Brennan, M., Kovacic, I., Carrella, A., Waters, T., 2017, On the Jump-up and Jump-down Frequencies of the Duffing Oscillator, J. Sound Vibr., 318:4-5 1250-1261.
9.	Fan, H., Yang, L., Tian, Y., Wang, Z., 2020, Design of Metastructures with Quasi-zero Dynamic Stiffness for Vibration Isolation, Compos. Struct., 243 112244.
*10.*	Shin, E., 2018, Balancers for an Operating Lamp Using Compression Springs, J. Korean Soc. Manuf. Technol. Eng., 27:2 160-166.

Seok-Chun Jeon

M.S. Degree in the Department of Mechanical Engineering from Chungbuk National University. His research interests include Quasi-zero Stiffness and Plastic Processing Analysis.

E-mail: paplerepom@gmail.com

Kee-Sung Kim

Ph.D. Candidate in the Department of Precision Mechanical Engineering from Chungbuk National University. His research interests include Dynamic FEA Simulation, Vibration Analysis and Quasi-zero Stiffness.

E-mail: gsk0221@chungbuk.ac.kr

Eung-Soo Shin

Professor in the Department of Mechanical Engineering, Chungbuk National University. His research interest is Dynamic Characterization of Mechanical Systems.

E-mail: esshin@chungbuk.ac.kr