所属单位：机电工程学院
教研室：机电工程学院
发表刊物：论文集
项目来源：国家自然科学基金项目
关键字：Frictional temperature rise; Rough contact surface, Statistic
摘要：The friction between rough surfaces of the tool and workpiece causes temperature rise during relative movement, which aggravates die wear. Based on the elastic contact Hertz theory and the fundamental theory of heat conduction, the temperature distribution on asperity was calculated in the paper. Under the hypothesis that asperity height distribution of rough surfaces accorded with Gauss’s law, the statistical values of embedded depth between contact surfaces were introduced and the statistical temperature rise distribution on asperity was analyzed. The results illustrated that the surface geometry morphology influenced the temperature rise apparently. The distributions of temperature rise in the axial and normal directions were non-uniform and the temperature rise decreased gradually from the centre of asperity. At the initial stage of friction, the temperature rise increased sharply and afterwards became stable gradually. The analysis of temperature rise distribution on the contact area of asperity provided the foundation for establishment of temperature rise model during extrusion forming process.
第一作者：孙宪萍
论文类型：论文集
页面范围：2
字数：1
是否译文：否
发表时间：2010-08-24