Mixed-Mode Crack Propagation in Cruciform Joint using Franc2D

被引：12

作者：

Al-Mukhtar A.M. ^{[1
,2
]}

机构：

[1] Research Fellow, Technische Universität Bergakademie Freiberg, Akademiestraße 6, Freiberg, 09599, Saxony

[2] Automated Manufacturing Engineering Department, Al-Khwarizmi College of Engineering, University of Baghdad, Baghdad

来源：

Journal of Failure Analysis and Prevention | 2016年 / 16卷 / 03期

关键词：

Biaxial fatigue; Biaxial stress ratio; Cruciform joint; Franc2D; Mixed-mode fracture;

D O I：

10.1007/s11668-016-0094-1

中图分类号：

O24 [计算数学];

学科分类号：

070102 ;

摘要：

The focus of this research was on determining the cracking behavior when parameter such as the biaxiality ratio was varied. The crack propagation under mixed-mode loading was simulated by means of finite element method. The stress intensity factors have been calculated by the linear elastic fracture mechanics approach using fracture analysis code-2D (Franc2D). The crack growth under opening mode-I was considered because the crack growth occurs mainly along the direction where the mode-I stress component becomes the maximum. The numerical integration of Paris’ equation was carried out. The effect of normal and transverse applied load (σx, and σy, respectively) on crack propagation was presented. It was found that the fatigue crack growth was faster at a smaller biaxial stress ratio (λ), i.e., higher σy on the horizontal crack plan. Moreover, fatigue strength values decrease as λ decreases. The results confirm the use of fracture mechanics approach in biaxial fracture. © 2016, ASM International.

引用

页码：326 / 332

页数：6

共 24 条

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