Analytical Solutions of Dynamic Crack Models of Bridging Fiber Pull-Out in Unidirectional Composite Materials

• 作者: Jin Cheng Nianchun Lü Yunhong Cheng Yuntao Wang
• 来源期刊: 现代机械工程(英文)
• 学科: 数学
• 关键词: Composite Materials BRIDGING Fibers ANALYTICAL Solutions CRACK Variable Loads
• 年，卷（期）: 2013,（4）
• 页码范围: 191-201
• 页数: 11页
• 分类号: O1

摘要

An elastic analysis of an internal central crack with bridging fibers parallel to the free surface in an infinite orthotropic anisotropic elastic plane was analyzed, and the crack extension should occur in the format of self-similarity. When the fiber strength is over its maximum tensile stress, the fiber breaks. By means of complex variable functions, the problem considered can be easily translated into Reimann-Hilbert mixed boundary value problem. Utilizing the built dynamic model of bridging fiber pull-out in unidirectional composite materials, analytical solutions of the displacements, stresses and stress intensity factors under the action of increasing loads Pt5/x5, Px5/t4 are obtained, respectively. After those analytical solutions were used by superposition theorem, the solutions to arbitrary complex problems were acquired.