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전석춘,김기성,신응수 한국생산제조학회 2024 한국생산제조학회지 Vol.33 No.1
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.