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V型金属钢板橡胶弹簧具有为机车车辆走行部所必需的三相弹性。然而,当使用由橡胶和金属粘结起来的弹性元件时,由于两种材质的性质具有本质的差异,使三向弹性系数的计算十分困难,至今尚无可供应用的确定公式。 作者利用变分原理——虚位移原理,考虑了金属与橡胶组合的边界条件,通过一组假设的试探函数,根据δ=0建立了控制方程。然后,再利用卡氏第二定律推导出单层的弹性系数,进而以这种方法确定了由多层组成的整个V型弹簧的刚度。
V-type metal plate rubber spring with rolling stock for the necessary three-phase flexibility. However, when the elastic member bonded by rubber and metal is used, the calculation of the three-direction elastic coefficient is very difficult due to the essential difference in the properties of the two materials. So far, no definite formula is available. Using variational principle - the principle of virtual displacement, the authors consider the boundary conditions of the metal-rubber combination and set up a control equation based on δ = 0 through a set of tentative functions. Then, using the second law of Carlson, the elastic coefficient of the single layer is deduced, and then the stiffness of the entire V-shaped spring composed of multiple layers is determined in this way.