Crack propagation in cylindrical shells

✍ Scribed by M. Farshad; P. Flüeler

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 888 KB
• Volume: 44
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(93)90114-8

✦ Synopsis

Ahstrati-Results

of a theoretical study of dynamic steady crack propagation in a circular cylindrical shell are presented, Equations of thin circular cylindrical shells are utilized for theoretical investigation. The semi-analytic crack tip stress solutions to shell equations are obtained by the perturbation method as well as an iterative method. Plots of internal stresses in the shell with a stationary as well as a steadily running crack are presented. These results are compared with those related to flat plates. It is concluded that the shell curvature has a p~noun~ effect on increasing the values of crack tip stresses. It would also qu~itatively affect the variation of stress field around the crack tip. In some cases, the curvature action is shown to be even more pronounced than the inertia effects.