Post yield solutions for fracture mechanics analyses of cracks emanating from elliptic holes

✍ Scribed by G.G. Chell; V. Vitek

• Publisher: Elsevier Science
• Year: 1979
• Tongue: English
• Weight: 599 KB
• Volume: 11
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(79)90002-x

✦ Synopsis

Abetnet-Two

methods are used to obtain post yield solutions for symmetric cracks emanating from elliptic holes. In the first a dislocation model is used to simulate the cracks and plastic zones. This method is exact within the numerical accuracies of the computations. In the second approximate techniques, based on the Green's function method are used. The two sets of results for the plastic zone sizes and plastic stress intensity factors as functions of applied stress and root radius are in good agreement. The approximate method is also used to determine the stress intensity factors for cracks emanating from a central round hole in a plate. The approximate linear elastic solutions are in relatively good agreement (to within 13%) with the results of more exact calculations. Both these comparisons show that the approximate method. which in general will be easier to solve than more exact methods, is sufficient for engineering purposes.