【摘要】 基于Firestone公司生产的1T15M-2膜式空气弹簧,运用膜式空气弹簧的理论刚度计算公式对空气弹簧的垂向刚度进行了分析。通过在ANSYS中建立该空气弹簧的精确模型,运用非线性有限元并逐次迭代的方法进行了计算,得到了空气弹簧在三种不同气压下的垂向刚度。仿真及理论计算的垂向刚度与试验数据基本一致。理论分析表明由有效面积变化产生的垂向刚度最大达到了总垂向刚度的一半以上,计算时不能忽略不计。该方法对于任意截面活塞的空气弹簧垂向刚度的计算有一定参考价值。更多还原

【Abstract】 Based on 1T15M-2 reversible sleeve air spring made by Firestone corp.,the vertical stiffness of the air spring was analyzed theoretically.At the same time,an accurate finite element model of a quarter of the air spring was established and its vertical stiffness was calculated by using the non-linear finite element method in ANSYS.The simulated vertical stiffnesses under three different pressures were obatined.The vertical stiffnesses obtained by simulation and theoretical calculation respectively are almost consistent with the test value,which shows the validity of the method.Theoretical analysis shows that the maximum vertical stiffness caused by changing rate of effective area may be more than one half of total vertical stiffness,which can not be neglected.The method is efficient to calculate vertical stiffness of air spring with arbitrary shape of piston.更多还原