Effects of Asperity Shape on the Adhesion Hysteresis Originated from Surface Roughness

摘要：

Adhesion of solid surfaces plays a significant role in many technical fields especially at micro and nano scale. The effect of asperity shape on the adhesion hysteresis originated from surface roughness has been investigated theoretically in this paper. Based on the adhesive contact model of single asperities with axisymmetric power-law shapes, the roughness-induced adhesion hysteresis is modeled by assuming the asperity heights follow a Gaussian distribution on the rough surface. The analysis results show that the dissipation energy decreases dramatically when the surface becomes rougher for all the shape indices, and the shape index affects the adhesion hysteresis at different levels with the variance of surface roughness. A general parameter consisting of the shape index of asperities is proposed to characterize the adhesion hysteresis. These will be helpful to understand and control the adhesion hysteresis for solid-solid contact.

关键词： Asperity shape Adhesion hysteresis Dissipation energy

作者: Lefeng Wang Bin Guo Guiming Huang Weibin Rong Lining Sun

作者单位: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin,China School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, China State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin, China

会议类型: 国际会议

会议名称: 2011 International Conference on Advanced Material Research(ICAMR 2011)(2011年先进材料研究国际会议)

会议地点: 重庆

会议语种:英文

页码: 201-205

在线出版日期: 2011-01-21（万方平台首次上网日期，不代表论文的发表时间）