Stress intensity analyses on tension of a finite thickness plate with two coplanar semi-elliptical surface cracks

✍ Scribed by Chai Guozhong; Zhang Kangda; Wu Dongdi

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 418 KB
• Volume: 54
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(95)00201-4

✦ Synopsis

This paper analyzes the interactions of two coplanar semi-elliptical surface cracks located, respectively, at the front and back surfaces in a finite thickness plate under uniform tension. Few numerical solutions app,~ar to be available in the literature so far for this kind of interaction. The analyzed ratios of crack depth to crack length (b~/a~, b~/a2) are 0.25, 0.5 and 1.0; the minimum relative distances between two cracks (s2/bmin) range from 0.5 to 2.0. In total, 18 crack configurations are analyzed. The mode I stress intensity factors along the crack front and the interacting coefficient of two cracks are presented. The numerical analyses are carried out by the hybrid boundary element method.