|
|
|
| A 6-DOF quasi-zero stiffness vibration isolation platform |
| XIAO Qingyu1, ZHOU Jiaxi1, XU Daolin1,2,WANG Kai1 |
1.College of Mechanical and Vehicle Engineering, Hunan University, Changsha, 410082, China;
2. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Changsha, 410082, China |
|
|
|
Abstract Aiming at the difficult problem of multi-direction low-frequency vibration isolation, a 6-DOF quasi-zero stiffness (QZS) vibration isolation platform was proposed.Firstly, a strut with a cam-roller-flexible beam mechanism was designed, and its QZS characteristics were realized with static analysis and parametric design.Then, a 6-DOF vibration isolation platform was constructed using the QZS struts.Its static analysis showed that this platform possesses QZS characteristics in all six DOFs.Finally, the dynamic model of this platform was established, and the force transmissibility in each direction was calculated to evaluate the platform’s vibration isolation performances.The effects of inclination angle of QZS strut on the platform’s vibration isolation performances were studied.Results indicated that the vibration isolation performances in all 6 directions of the proposed platform are superior to those of the corresponding linear vibration isolation platform to realize 6-DOF low-frequency vibration isolation.
|
|
Received: 28 June 2017
Published: 28 December 2018
|
|
|
|
[1] Alabuzhev P, Gritchin A, Kim L, et al. Vibration protecting and measuring system with quasi-zero stiffness. New York: Taylor & Francis Group, 1989.
[2] Carrella A, Brennan M J, Kovacic I, et al. On the force transmissibility of a vibration isolator with quasi-zero-stiffness. Journal of Sound and Vibration, 2009, 322(4-5): 707-717.
[3] 徐道临, 张月英, 周加喜,等. 一种准零刚度隔振器的特性分析与实验研究. 振动与冲击, 2014, 11: 208-213.
Xu D, Zhang Y, Zhou J, et al. Characteristic analysis and experimental investigation for a vibration isolator with quasi-zero stiffness. Journal of Vibration and Shock, 2014, 11: 208-213.
[4] Kovacic I, Brennan M J, Waters T P. A study of a nonlinear vibration isolator with a quasi-zero stiffness characteristic. Journal of Sound and Vibration, 2008, 315(3): 700-711.
[5] Zhou N, Liu K. A tunable high-static-low-dynamic stiffness vibration isolator. Journal of Sound and Vibration, 2010, 329: 1254-1273.
[6] Huang X, Liu X, Sun J, Zhang Z, et al. Effect of the system imperfections on the dynamic response of a high-static-low-dynamic stiffness vibration isolator. Nonlinear Dynamics, 2014, 76(2): 1157-1167.
[7] Shan Y, Wu W, Chen X. Design of a miniaturized pneumatic vibration isolator with high-static-low-dynamic stiffness. Journal of Vibration and Acoustics, Transactions of the ASME, 2015, 137: 045001.
[8] Zheng Y, Zhang X, Luo Y, et al. Design and experiment of a high-static–low-dynamic stiffness isolator using a negative stiffness magnetic spring. Journal of Sound and Vibration, 2016, 360: 31-52.
[9] Hao Z, Cao Q. The isolation characteristics of an archetypal dynamical model with stable-quasi-zero-stiffness. Journal of Sound and Vibration, 2015, 340: 61-79.
[10] 王毅, 徐道临, 周加喜. 滚球型准零刚度隔振器的特性分析. 振动与冲击, 2015, 34(4): 142-147.
Wang Y, Xu D, Zhou J. Characteristic analysis of a ball-type vibration isolator with quasi-zero-stiffness. Journal of Vibration and Shock, 2015, 34(4): 142-147.
[11] Sun X, Jing X. Multi-direction vibration isolation with quasi-zero stiffness by employing geometrical nonlinearity. Mechanical Systems and Signal Processing, 2015, 62–63: 149-163.
[12] Platus D. Negative-stiffness-mechanism vibration isolation systems. In: Proceedings of the SPIE's International Symposium on Vibration control in Microelectronics, Optics and Metrology 1991.
[13] Wu Z, Jing X, Sun B, et al. A 6DOF passive vibration isolator using X-shape supporting structures. Journal of Sound and Vibration, 2016, 380: 90-111.
[14] Wang Z, Liu L K, Zheng G T. Optimal Design of Octo-Strut Vibration Isolation Platform. Journal of Guidance, Control, and Dynamics, 2006, 29(3): 749-753.
|
|
|
|
