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EnglishAn external axial surface flaw in a metallic round pipe subjected to an internal pressure or various types of stress distributions on the crack faces is considered. The longitudinal surface defect is assumed to have an elliptical-arc shape with the ellipse aspect ratio changing during the whole propagation, as has been deduced through several experimental investigations. The ratio R* = R / t between the inner radius and the wall thickness of the pipe is equal to 1 (thick-walled pipe). The stress-intensity factor along the crack front is derived by applying the finite element method. Then a numerical simulation procedure is carried out to predict the crack growth under cyclic internal pressure. Some results are compared to those determined by other authors.
| Titolo: | Fatigue growth of external axial surface cracks in hollow cylinders |
| Autori: | |
| Data di pubblicazione: | 1999 |
| Abstract: | An external axial surface flaw in a metallic round pipe subjected to an internal pressure or various types of stress distributions on the crack faces is considered. The longitudinal surface defect is assumed to have an elliptical-arc shape with the ellipse aspect ratio changing during the whole propagation, as has been deduced through several experimental investigations. The ratio R* = R / t between the inner radius and the wall thickness of the pipe is equal to 1 (thick-walled pipe). The stress-intensity factor along the crack front is derived by applying the finite element method. Then a numerical simulation procedure is carried out to predict the crack growth under cyclic internal pressure. Some results are compared to those determined by other authors. |
| Handle: | http://hdl.handle.net/11381/1451322 |
| ISBN: | 1550581635 |
| Appare nelle tipologie: | 4.1b Atto convegno Volume |
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