Stress intensity factors for large arrays of radial cracks in thick-walled steel cylinders

✍ Scribed by M. Perl; R. Arone

• Publisher: Elsevier Science
• Year: 1986
• Tongue: English
• Weight: 583 KB
• Volume: 25
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(86)90130-x

✦ Synopsis

Mode I stress intensity factors for large arrays of up to 512 radial cracks emanating from the inner surface of a pressurized thick-walled cylinder are evaluated. Furthermore, for cylinders that underwent autofrettage, the negative stress intensity factors due to the compressive residual stresses are also calculated. Both stress intensity factors are evaluated, for numerous crack arrays (2-512), for a wide range of crack lengths and for a fully autofrettaged cylinder, via the finite element (FE) method. The present results accentuate the considerable influence of the number of cracks in the array, as well as that of the autofrettage on the actual stress intensity factor prevailing at the tip of these cracks.