A new structure design for high-static-low-dynamic-stiffness air spring vibration isolation device and its experimental research

被引：0
|
作者：
Yang Z.-H. [1 ,2 ]
Shuai C.-G. [1 ,2 ]
Li B.-Y. [1 ,2 ]
Ma J.-G. [1 ,2 ]
机构：
[1] Institute of Noise & Vibration, Naval University of Engineering, Wuhan
[2] National Key Laboratory on Ship Vibration & Noise, Wuhan
来源：
Chuan Bo Li Xue/Journal of Ship Mechanics | 2022年 / 26卷 / 11期
关键词：
Air spring; High-static-low-dynamic-stiffness; Negative stiffness; Structure optimization design; Vibration isolation;
D O I：
10.3969/j.issn.1007-7294.2022.11.013
中图分类号：
学科分类号：
摘要：
The current isolation effect of marine vibration isolation devices on low-frequency vibration is not ideal, which seriously affects the acoustic stealth performance of a ship. A new high-static-low-dynamicstiffness structure design was proposed in this paper based on air spring for the low frequency vibration excited by ship machinery. Firstly, the static characteristics of the structure were deduced through the derivation of a mechanical model, and its influence on the system characteristics was analyzed through the dimensionless parameters. Secondly, the dynamic equation was deduced by the harmonic balance method, and the characteristics of the force transmission rate were analyzed. Finally, the principle prototype was designed, manufactured and tested, and the stiffness of the device under different pressures was discussed. Theoretical and experimental results show that the structure design can introduce negative stiffness through the lateral air spring isolator and the universal joint-connecting rod mechanism, which can effectively reduce the overall dynamic stiffness while the static load capacity is ensured to remain unchanged. Also, it is observed that the air pressure of the lateral air spring isolator is a key factor affecting the stiffness of the device. © 2022, Editorial Board of Journal of Ship Mechanics. All right reserved.
引用
收藏
页码：1705 / 1713
页数：8
相关论文
共 16 条
  • [1] Gu Long, Min Jie, The development of ship vibration and noise control technology, Ship Science and Technology, 41, 23, pp. 1-5, (2019)
  • [2] Carrella A, Brennan M J, Waters T P, Et al., Force and displacement transmissibility of a nonlinear isolator with high-staticlow-dynamic-stiffness, International Journal of Mechanical Sciences, 55, 1, pp. 22-29, (2012)
  • [3] Carrella A., Passive vibration isolators with high-static-low-dynamic-stiffness, (2008)
  • [4] Carrella A, Brennan M J, Waters T P., Static analysis of a passive vibration isolator with quasi-zero-stiffness characteristic, Journal of Sound and Vibration, 301, 3, pp. 678-689, (2006)
  • [5] Huang Xiuchang, Et al., Shock isolation performance of a nonlinear isolator using Euler buckled beam as negative stiffness corrector: Theoretical and experimental study, Journal of Sound and Vibration, 345, pp. 178-196, (2015)
  • [6] Meng Lingshuai, Et al., Theoretical design and characteristics analysis of a quasi-zero stiffness isolator using a disk spring as negative stiffness element, Shock and Vibration, pp. 1-19, (2015)
  • [7] Zhou Jiaxi, Et al., Nonlinear dynamic characteristics of a quasi-zero stiffness vibration isolator with cam-roller-spring mechanisms, Journal of Sound and Vibration, 346, pp. 53-69, (2015)
  • [8] Ren Xudong, Characteristics analysis and application study of the quasi-zero stiffness isolator using air spring, (2017)
  • [9] Ge Yan, Et al., Large stroke quasi-zero stiffness vibration isolator using three-link mechanism, Journal of Sound and Vibration, 478, (2020)
  • [10] Xu Daolin, Et al., Theoretical and experimental analyses of a nonlinear magnetic vibration isolator with quasi-zero-stiffness characteristic, Journal of Sound and Vibration, 332, 14, pp. 3377-3389, (2013)
12