Design and analysis of a novel quasi-zero stiffness vibration isolation system

被引：0
作者：
机构：
[1] Institute of Medical Equipment, Academy of Military Medical Sciences
来源：
Sun, J.-G. | 1600年 / Chinese Vibration Engineering Society卷 / 33期
关键词：
Averaging method; Nonlinear; Quasi-zero stiffness; Transmissibility;
D O I：
10.13465/j.cnki.jvs.2014.11.034
中图分类号：
学科分类号：
摘要：
Combining parallelly a negative stiffness disk spring with a linear positive stiffness spring, a novel quasi-zero stiffness vibration isolation system was designed. In the static characteristics analysis, the force-displacement relationship and the stiffness-displacement relationship of the system were established, the system parameters offering zero stiffness at the equilibrium position of the system were derived. In the dynamic characteristics analysis, the nonlinear dynamic equations were established, respectively when the system was excited by a harmonic force or a harmonic displacement. By using the averaging method, the effects of system parameters and the excitation amplitude on the force transmissibility and the displacement transmissibility of the system were analyzed. Compared with its equivalent linear system, this system was proved to be superior in low frequency and ultra-low frequency vibration isolations. The results offered a theoretical guidance for design and application of the novel quasi-zero stiffness vibration isolation system.
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页码：195 / 199
页数：4
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