本文从试验资料出发,描述了摩擦系数随静接触时间延长而变大的特征。经过对固体的弹性模量、硬度进行蠕变试验,概括出相应的蠕变方程。最后把摩擦随静接触时间变化问题与材料的蠕变特性联系起来,分析了材料蠕变特性对摩擦的粘着项和犁沟项的影响。从而导出了摩擦随静接触时间而变化的表达式。理论分析与实测对比,结果基本一致。 This article starts from the test data and describes the characteristics of the friction coefficient becoming larger with the prolonged static contact time. After creep tests on the elastic modulus and hardness of solids, the corresponding creep equations are summarized. Finally, the relationship between the friction and static contact time change and the creep characteristics of the material are related. The influence of the creep characteristics of the material on the frictional adhesion term and the furrow term is analyzed. Thus, the expression of friction changing with static contact time is derived. The theoretical analysis was compared with the actual measurement, and the results were basically the same.