Finite Element Analysis on the Adhesive Contact between a Cylinder and a Half Space

• Main Authors: Chi Yuan Lu, 呂啟源
• Other Authors: J. J. Wu
• Format: Others
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/42738010778534676001

碩士 === 長庚大學 === 機械工程學系 === 98 === This study, investigates the nano-scale adhesive contact between a two-dimensional elastic cylinder and a rigid half-space, and also the stress and strain arisen inside the cylinder. The Lennard-Jones potential and the Derjaguin approximation are used to describe the traction on the cylinder due to the half-space. The finite element code, ABAQUS, is employed in this study. The finite element analyses are performed with different Tabor parameters. The relation between the contact length and the total load, and the relation between the pull-off force and the Tabor parameter are obtained. The internal stress and strain can be obtained, too. The results are compared with those obtained by the two-dimensional Maugis-Dugdale model. It is found that the Tabor parameter governs the adhesive contact behaviors. The Maugis-Dugdale model gives good results for large Tabor parameter. The analysis procedure can be extended to the adhesive contact between a body of arbitrary shape and a rigid half-space. The result is important in nano-scale contact. It can be used in MEMS and biomechanics.