碟簧力学性能试验及仿真分析

针对外径28mm的C系列碟簧,利用微机控制电子试验机进行静力加载试验,得到碟簧不同工况下的载荷-位移特性曲线.基于ABAQUS有限元软件,建立了相应碟簧的有限元模型,进行不同位移载荷下的数值模拟计算,利用实验数据对数值计算结果进行检验并修正,修正后模型的计算结果与实测结果吻合良好.在此基础上,对开发的非标开槽碟簧建立有限元模型,计算得出了不同开槽位置和不同开槽方式下碟簧的载荷-位移特性曲线和刚度-位移曲线,系统分析了不同开槽位置和开槽方式对碟簧载荷变化范围、刚度变化速率、刚度变化幅度、负刚度区域大小和最大等效应力的影响.本研究对非标开槽碟簧的设计和作为负刚度元件在减隔振装置上的应用具有一定的参考价值.

Mechanical Property Test and Simulation Analysis of Disc Spring

The load-displacement characteristic curves of C-series disc spring with outside diameter of 28 mm under different working conditions were obtained by static loading test with microcomputer controlled electronic testing machine. Based on the ABAQUS finite element software, the finite element model of disc spring was established and the numerical simulation was carried out under different displacement loads. The numerical models were tested and modified using the experimental data. The modified model agreed well with the measured results. On this basis, the finite element model of non-standard grooved disc spring was established, and the load-displacement characteristic curve and stiffness-displacement curve of the disc spring under different slot positions and different slots were calculated. The effects of different slotting positions and slotting modes on the disc spring load variation range, stiffness change rate, stiffness variation range, negative stiffness zone size and maximum equivalent stress were analyzed. This study has a certain reference value for the design of non-standard grooved disc spring and the application of negative stiffness element on the vibration isolation device.