Adhesive force between a spherical rigid particle and an incompressible elastic substrate

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• 作者：Shunping Yan ; Linghui He ; ^{lhhe@ustc.edu.cn}
• 关键词：Adhesive force ; Derjaguin&rsquo ; s approximation ; Intermolecular interaction
• 刊名：Mechanics of Materials
• 出版年：2012
• 期刊代码：67_01676636
• 类别：ms
• 出版时间：June, 2012
• 卷：49
• 期：Complete
• 页码：66-71
• 文件大小：660 K

摘要

Adhesion between a spherical rigid particle and an incomprssible elastic substrate is studied on the basis of the Lennard-Jones (L-J) potential, and the aim is to explore limitations of the well-known Derjaguin approximation. A new expression of the adhesive force is derived, in which the contribution from the elastic deformation of the substrate is incorporated naturally. Numerical results show that the Derjaguin approximation is valid down to particle radii of the order of the interaction range.