Abstract
The work investigates the importance of the K-T approach in the modelling of pressure cracked structures. T-stress is the constant in the second term of the Williams expression; it is often negligible, but recent literature has shown that there are cases where T-stress plays the role of opening the crack, also T-stress improves elastic modeling at the point of crack. In this research study, the most important effects of the T-stress are collected and analyzed. A numerical analysis was carried out by the extended finite element method (X-FEM) to analyze T-stress in an arc with external notch under internal pressure. The different stress method (SDM) is employed to calculate T-stress. Moreover, the influence of the geometry of the notch on the biaxiality is also examined. The biaxiality gave us a view on the initiation of the crack. The results are extended with a comparison to previous literature to validate the promising investigations.
Original language | English |
---|---|
Article number | 507 |
Number of pages | 10 |
Journal | Mathematics |
Volume | 9 |
Issue number | 5 |
DOIs | |
Publication status | Published - 2 Mar 2021 |
Keywords
- T-stress
- X-FEM
- notch
- pipe
- stress difference method (SDM)