Local and global collapse pressure of longitudinally flawed pipes and cylindrical vessels
- Limit loads can be calculated with the finite element method (FEM) for any component, defect geometry, and loading. FEM suggests that published long crack limit formulae for axial defects under-estimate the burst pressure for internal surface defects in thick pipes while limit loads are not conservative for deep cracks and for pressure loaded crack-faces. Very deep cracks have a residual strength, which is modelled by a global collapse load. These observations are combined to derive new analytical local and global collapse loads. The global collapse loads are close to FEM limit analyses for all crack dimensions.
| Author: | Manfred StaatORCiD |
|---|---|
| DOI: | https://doi.org/10.21269/72 |
| Document Type: | Article |
| Language: | English |
| Year of Completion: | 2005 |
| Publishing Institution: | Fachhochschule Aachen |
| Tag: | Axialbelastung; FEM; Grenzwertberechnung; Traglastanalyse Axially cracked pipe; Global and local collapse; Limit analysis; Pressure loaded crack-face |
| GND Keyword: | Finite-Elemente-Methode; Grenzwertberechnung; Axialbelastung |
| Source: | International Journal of Pressure Vessels and Piping 82 (2005), Seite 217–225 ; http://dx.doi.org/10.1016/j.ijpvp.2004.07.022 |
| Institutes: | FH Aachen / Fachbereich Medizintechnik und Technomathematik |
| FH Aachen / IfB - Institut für Bioengineering | |
| Dewey Decimal Classification: | 6 Technik, Medizin, angewandte Wissenschaften / 60 Technik / 600 Technik, Technologie |
