一种活塞环压力分布与自由形状计算方法

通过分析不同特性的非均压高点环非仅为余弦函数压力分布，应用有限元分析软件，基于静态缩减法求解活塞环接触节点位移的数值方法，参考Arnold 径向压力分布表达式，得到引入压力分布形状系数，且适用于最大相对压力1 < im ≤ 2.22，呈卡腰葫芦形压力分布形状的活塞环压力分布表达式和自由形状的计算方法。通过实例验证，该计算方法达到活塞环设计要求。

Study on a calculation method of piston ring pressure distribution and free form

By analyzing the non-uniform pressure high point ring with different characteristics, which is a non-cosine function pressure distribution, using the finite element analysis software, the numerical method for solving the contact node displacement of the piston ring based on the static reduction method, and referring to the Arnold radial pressure distribution expression, the form coefficient of the introduced pressure distribution was obtained. This method is also suitable for obtaining piston ring pressure distribution expression and calculation method of free form in the shape of clamping waist gourd pressure distribution when the maximum relative pressure is 1<im≤2.22. The example verifies that the calculation method can meet the design requirements of piston ring.