囊式负压空气隔振器力学建模与性能研究

Research on Dynamics Model and Properties of Bellows Type Vibration Isolator with Negative Pressure

以低频隔振器为研究对象,利用负压空气独有的特性,结合橡胶良好的弹性性能,提出了囊式负压空气隔振器的全新概念,对负压隔振原理进行了定性分析。力学建模分析、理论仿真分析以及实验验证结果表明,所建立起来的隔振系统具有理想的非线性弹性曲线。同时研究了负压大小和有效面积对性能的影响。最后得出,囊式负压空气隔振器可以获得理想的低频隔振效果,有很强的实用性。

Low frequency vibration isolator was studied herein.According to the unique features of negative pressure and the good elastic performance of rubber,a new concept of bellows type vibration isolator with negative pressure was proposed.The qualitative analyses of negative pressure isolation theory were carried out.Through mechanics modeling and theoretical simulation analyses and the experimental results indicate that the vibration isolator system has a more ideal nonlinear elastic curve.At the same time,impacts of the negative pressure and the effective area on performance were studied.Results show that,the bellows type vibration isolator with negative pressure has a strong practicability.