A Boundary Finite Element for Anisotropic Materials containing Multiple Holes and Cracks

• Main Authors: Shao-TzuHuang, 黃紹慈
• Other Authors: Chyan-Bin Hwu
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/97qj9s

碩士 === 國立成功大學 === 航空太空工程學系 === 104 === In this study, a special boundary element for a two-dimensional anisotropic elastic solid containing a single elliptical hole or crack is applied. The main feature of this special boundary element is that no meshes are needed along the boundary of holes. Besides, the stress intensity factors of the crack or the stress concentrated factor of hole can be evaluated by using only the remote boundary displacements and tractions.To extend this special boundary element to the problems with multiple holes, a boundary finite element is established further by using the relation between element nodal force of finite element and surface traction of boundary element. The accuracy and efficiency of the proposed boundary finite element were then verified through the numerical examples compared with the solutions obtained by analytical solutions and the commercial finite element software.