Three dimensional calculation of growth of cracks starting in parallel planes by boundary elements

✍ Scribed by W.S. Blackburn

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 106 KB
• Volume: 21
• Category: Article
• ISSN: 0142-1123
• DOI: 10.1016/s0142-1123(99)00079-1

✦ Synopsis

Some applications are reported of a recent procedure developed by Young for crack growth, which calculates three dimensional stress intensity factors by boundary integral equations. These are used to compute fatigue crack growth as cracks grow. The present paper applies the method to a fully through crack of uniform size initially at the centre of a block under uniform tension. Further analyses were then carried out for cases when there are two further initially circular cracks in a plane parallel to that of the through crack. The calculations showed that when the distance between the planes was equal to the initial radius of the circular crack the cracks attracted each other without intersecting, but intersection occurred when the spacing was half this amount.