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28 June 2023 Theoretical analysis for a novel quasi-zero stiffness air spring vibration isolation system
Bu-yun Li, Chang-geng Shuai, Jian-guo Ma
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Proceedings Volume 12720, 2022 Workshop on Electronics Communication Engineering; 127200S (2023) https://doi.org/10.1117/12.2675092
Event: 2022 Workshop on Electronics Communication Engineering (WECE 2022), 2022, Xi'an, China
Abstract
A novel quasi-zero stiffness air spring (QZS-AS) vibration isolation system of ship machinery is put forward in this paper. The system consists of the vertical air springs, the lateral air springs, the turning joints, the connectors and the mass. The vertical air springs are mounted vertically to bear the mass to provide positive stiffness. The turning joints, the connectors together with the lateral air springs provide the negative stiffness. The static analysis of the system is carried out and the optimal combination of the configurative parameters is derived. It shows that as the lateral air pressure increases or the connector length decreases, the negative stiffness provided by the lateral air springs increases to reduce the overall stiffness. Then, the dynamic equations are established. The stability analyses for the QZS-AS autonomous and non-autonomous system are carried out, and the stability conditions for both systems are given. It can be found that the novel system can realize quasi-zero characteristics to improve vibration isolation performance and maintain dynamic stability with proper parameters.
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Bu-yun Li, Chang-geng Shuai, and Jian-guo Ma "Theoretical analysis for a novel quasi-zero stiffness air spring vibration isolation system", Proc. SPIE 12720, 2022 Workshop on Electronics Communication Engineering, 127200S (28 June 2023); https://doi.org/10.1117/12.2675092
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KEYWORDS
Vibration isolation
Complex systems
Analytical research
Design and modelling
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