Analysis of dynamic stress intensity factors for inclined cracks considering contact interaction

被引：0
|
作者：
Peng Y. [1 ]
Yang P. [1 ,2 ]
Jiang W. [1 ]
机构：
[1] School of Transportation, Wuhan University of Technology, Wuhan
[2] Key Laboratory of High Performance Ship Technology, Wuhan University of Technology, Ministry of Education, Wuhan
来源：
Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2019年 / 40卷 / 08期
关键词：
Contact stresses; Crack contact; Crack parameters; Dynamic stress intensity factors; Inclined crack; Interaction integral; Load style; Tension impact loading;
D O I：
10.11990/jheu.201808082
中图分类号：
学科分类号：
摘要：
A series of models was analyzed by using the finite element method to investigate the dynamic stress intensity factors (DSIFs) at the crack tip of a centrally cracked finite plate under tension impact loading. The stress singularity at the crack tip was simulated by quarter-point singular elements. DSIFs were obtained through the interaction integral method. The influences of crack contact, impact load style, crack length, crack angle, and crack location were discussed. The time history curves of contact stresses were also presented. Numerical results showed that the negative DSIFs for mode Ⅰ can be eliminated if the contact between crack faces was considered. The influence of contact stiffness on DSIFs was more pronounced than that of the friction coefficient, and the influence of load style was significant even if the total impulse remained constant. The effect of crack parameters, such as crack length, on the DSIFs for mode Ⅰ was more significant than that on the DSIFs for mode Ⅱ. © 2019, Editorial Department of Journal of HEU. All right reserved.
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页码：1399 / 1405
页数：6
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