高速客车空气弹簧非线性横向刚度特性研究

A Study on Nonlinear Lateral Stiffness of Air Spring for High Speed Railway Car

运用非线性有限元分析技术研究了由多层正交异性复合材料组成的高速客车空气弹簧的非线性横向刚度特性，分析了大变形的几何非线性和胶囊与金属裙板形成的接触非线性问题，给出了空气弹簧横向刚度非线性特性较为精确的描述，计算结果与试验比较表明，两者吻合良好。最后。

The Nonlinear Finite Element Analysis is applied to study the nonlinear lateral stiffness of high speed railway car's air spring, which is composed of composites with multiple orthotropic materials. Nonlinear geometry which evolves large deformations and contact problem dealing with the contact between air bag and skirt plate, are considered during numerical analysis. A precise description for the nonlinear lateral stiffness of air spring is yielded and the solutions are agreed well with the practical testing results. At last, some parameters for air spring design are discussed.