【摘要】 针对单一材料高副构件接触应力大的问题,提出一种弹性模量外高内低的双金属复合高副机构设计思路,以增大构件的接触变形,便于润滑油膜存在,利于减摩.基于赫兹接触理论建立有限元模型,在相同载荷条件下,分析单一材料和双金属复合弹性体的接触压力和接触变形,并进行平行圆柱体接触摩擦试验.结果表明:与单一材料高副构件相比,双金属复合弹性体有相对较大的实际接触面积,可以有效降低接触应力.更多还原

【Abstract】 To solve the large contact stress of high and secondary members with single material,the bimetal composite with high and low elastic modulus was designed to increase the contact deformation of the members and facilitate the existence of lubricant film with reduced friction. Based on Hertzian contact theory,the finite element model was established. Under the same load,the contact pressure and the contact deformation of single material and bimetallic composite elastomer were analyzed,and the friction and wear comparison tests were carried out. The results show that the bimetallic composite elastomer has relatively larger actual contact area than the single high-side member,which can effectively reduce the contact stress.更多还原