Calculation of stress intensity factors for circumferential semi-elliptical cracks with high aspect ratio in pipes
| Autor: | S. M. Nabavi, Amin Zareei |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Weight function
Materials science business.industry Mechanical Engineering 0211 other engineering and technologies Welding residual stress 02 engineering and technology Structural engineering Finite element method Stress (mechanics) 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Cylinder General Materials Science Point (geometry) business Stress intensity factor 021101 geological & geomatics engineering Stress concentration |
| Zdroj: | International Journal of Pressure Vessels and Piping. 146:32-38 |
| ISSN: | 0308-0161 |
| DOI: | 10.1016/j.ijpvp.2016.05.008 |
| Popis: | In this paper, stress intensity factors are calculated at the deepest point of an internal circumferential semi-elliptical crack in a pipe subjected to any arbitrary load. Based on the three dimensional finite element analysis, a weight function is proposed for high aspect ratio semi-elliptical cracks in pipes. An effective expression is developed analytically to evaluate the stress intensity factor using the weight function method. For several crack face stress fields and welding residual stress distributions, the weight function is validated against finite element data and those in the literature. Based on the comparison results, it can be concluded that the solution proposed in this paper is effective in engineering applications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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