Fatigue and fracture of cylindrical shells containing a circumferential crack

✍ Scribed by F. Erdogan; M. Ratwani

• Publisher: Springer Netherlands
• Year: 1970
• Tongue: English
• Weight: 715 KB
• Volume: 6
• Category: Article
• ISSN: 1573-2673
• DOI: 10.1007/bf00182626

✦ Synopsis

The cylindrical shells containing a circumferential crack subjected to axial tensaon are considered. For a uniform stress away from the crack the membrane and bending components of the stress intensity factor are obtained within the confines of an eight order linear shallow shell theory. By subjecting 6061-T4 aluminum cylinders to axial fatigue, crack propagation data are collected. Using two different empirical models the shell data are analyzed along with the plate data and it is shown that the fatigue crack propagation behavior of shells can be predicted from that of flat plates with the same material and thickness. The shells are then subjected to static rupture tests. Due to the difference in the nature of plastic deformations in shells and plates, a direct comparison of the rupture results in the two cases, smailar to that of fatigue results, does not seem to be possible.