Semi-analytical Method for Solving the Stress Intensity Factor of Mode Ⅰ-Ⅱ Crack Based on Energy Density Equivalence Principle

被引：0
|
作者：
Huang M. [1 ]
Cai L. [1 ]
Qi S. [1 ]
机构：
[1] Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province, Southwest Jiaotong University, Chengdu
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2020年 / 56卷 / 22期
关键词：
Energy density equivalence principle; ModeⅠ-Ⅱcrack; Semi-analytical model; Stress intensity factor;
D O I：
10.3901/JME.2020.22.068
中图分类号：
学科分类号：
摘要：
The stress intensity factor is an important mechanical parameter for controlling the behaviour of the brittle fracture toughness and fatigue crack growth. In the past researches, methods and formulas for solving K-factor of various cracked components are complicated. The expressions of KⅠ and KⅡ are both different fitting expressions, which have a limited application. A semi-analytical model with a simple form and general applications to predict K-factor for components with mode Ⅰ-Ⅱ crack is proposed based on energy density equivalence principle, and parameters can be calculated by a few FEA calculation. The result shows that K-factor predicted by the semi-analytical model agrees well with the literature result and the FEA result, and the model provides important theoretical foundation to studies on the brittle fracture toughness and fatigue crack growth. © 2020 Journal of Mechanical Engineering.
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页码：68 / 75
页数：7
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