Plunger service life simulation calculation method considering friction force of friction pair

The invention provides a plunger service life simulation calculation method considering friction force of a friction pair, and belongs to the technical field of plunger pumps. The method comprises the following steps that 1, a rigid-flexible coupling single-plunger plunger pump core moving part dynamic model is established; step 2, inserting a friction surface of a friction pair and modifying a kinematic pair of the friction pair; and step 3, loading and solving the dynamic model and calculating the service life of the plunger part, and simulating and calculating the service life of the plunger by establishing a rigid-flexible coupling single-plunger plunger pump dynamic model considering the friction effect of the friction pair, so that the service life simulation of the plunger is closer to the actual condition, and the accuracy of a service life calculation result is improved. 本发明提供了一种考虑摩擦副摩擦力的柱塞寿命仿真计算方法，属于柱塞泵技术领域。所述方法包括以下步骤：步骤1：建立刚柔耦合的单柱塞柱塞泵核心运动部件动力学模型；步骤2：插入摩擦副摩擦面并修改摩擦副的运动副；步骤3：加载求解动力学模型并计算柱塞部件寿命，通过建立考虑摩