弹性限位器对双层隔振装置抗冲击性能影响分析

Affect of Displacement Restrictor on Shock Resistance Performance of Double-stage Vibration Isolation System

对于采用隔振装置的设备,在一定冲击作用下,设备的相对位移响应较大,可能超过了设备外接管路的变形能力,甚至超过了隔振器本身的变形范围。因此,在保证设备加速度响应的前提下,须在隔振装置中使用限位器以限制设备和隔振器的最大相对位移。以带有弹性某双层隔振装置的设备为研究对象,以非线性弹簧单元模拟限位器,采用直接积分法计算并分析上、下层限位器本身以及上、下层限位器参数(刚度、间隙)的变化对隔振装置的影响,最后得出有意义的结论并用于指导设计。

With the given shock actions, the displacement response of the equipment with vibration isolation mounting may exceed the deformation limits of outside pipelines, and even exceed the deformation limits of isolators themselves. Therefore, displacement restrictors should be used in order to limit the relatively large displacement without acceleration response increasing. In this thesis, the double-stage vibration isolation system is researched, displacement restrictors is simulated with nonlinear springs, the shock responses is analyzed using direct integral method, and the affects of parameters （stiffness and gap） on isolation mounting performance is discussed. Finally, a significant conclusion is summarized.