QZS특성과 고하중 지지 성능을 갖는 진동절연장치
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 transmissibilityReferences
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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
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
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