A method for stress intensity factor calculation of infinite plate containing multiple hole-edge cracks

作     者：Zhao, Jinfang Xie, Liyang Liu, Jianzhong Zhao, Qun 

作者机构：Northeastern Univ Sch Mech Engn & Automat Shenyang Peoples R China Beijing Inst Aeronaut Mat Beijing Peoples R China Shenyang Inst Engn Dept Mech Engn Shenyang Peoples R China 

出 版 物：《INTERNATIONAL JOURNAL OF FATIGUE》 (国际疲劳杂志)

年 卷 期：2012年第35卷第1期

页      面：2-9页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0802[工学-机械工程] 

主　　题：Multiple site damage Complex variable function Equivalent crack Analytical method Stress intensity factor 

摘      要：Multiple site damage is the occurrence of small fatigue cracks at several sites within aging aircraft structures. Focusing on this typical structure, an analytical method for calculating the stress intensity factor of an infinite plate containing multiple hole-edge cracks was introduced in this paper. The properties of complex variable functions are used to evaluate the stress function. The approximate superposition method is applied to solve stress intensity factor problems on multiple holes. The equivalent crack is introduced to modify the method. Some numerical examples of an infinite plate containing two hole-edge cracks are examined by the method. By comparing the analytical and finite element analysis results it was realized that the analytical results are accurate and reliable. This modified analytical method is easier to apply than some traditional analytical methods and can provide stress intensity factor solutions for an infinite plate containing a random distribution of multiple hole-edge cracks. (C) 2011 Elsevier Ltd. All rights reserved.