一种正交菱形准零刚度隔振器的设计与分析

The Design and Analysis of a Vibration Isolator with Orthogonal Diamond of Quasi Zero Stiffness

本文基于准零刚度结构原理,利用结构几何非线性,设计一种具有准零刚度特征的正交菱形隔振结构。该结构通过水平弹簧产生负刚度特性,并由竖直弹簧提供正刚度支撑力,实现隔振器的高静低动特性,并通过算例将该结构应用于汽车悬架系统中。结果表明,在与线性隔振器具有相同支撑力的条件下,正交菱形准零刚度隔振器具有更宽的隔振范围及弱的系统共振区的力传递率,从而提升了汽车悬架系统的隔振性能。

This paper designed a vibration isolation structure with orthogonal diamond of the quasi zero stiffness property by a geometrical nonlinearity based on the quasi zero stiffness structure principle. The structure generated a negative stiffness through horizontal springs and the positive support stiffness was provided by vertical springs to achieve the high static low dynamic characteristics and it was apply to a vehicle suspension system by way of a case. The results indicated the vibration isolator with an orthogonal diamond quasi zero stiffness had the wider isolation range and lower force transmissibility than a linear one under the same holding powers so as to improve the performance of the vehicle suspension isolation systems.