Numerical Analysis of Adhesive Contact of Micro-Structures

• Main Authors: Meng-HsuanWu, 吳孟璇
• Other Authors: Yu-Yun Lin
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/08052478180853282667

碩士 === 國立成功大學 === 土木工程學系碩博士班 === 98 === In this research, we studied the adhesive and non-adhesive contact problems of rigid sphere and the elastic solid with surface microstructures. We established 3D finite element models by using spring elements, which described the behavior of microstructures. Also, the adhesive stress between two surfaces was implemented by user-defined cohesive element. The behavior of elastic solid with surface microstructures under small deformation was analyzed. The influence of the aspect ratio , column width , and area density on the effective stiffness of contact was discussed, as well as maximum pull-off force and effective work of adhesion. The numerical results were compared with the analysis and the experimental data in literature.