Abstract
In this study, the effect of longitudinal distance H between non-aligned twin cracks is investigated using finite element damage analysis. The FE damage analysis based on the stress-modified fracture strain model is used to calculate the failure stress of non-aligned twin cracked pipe. Parametric study on the axial distance H between non-aligned twin cracks with various crack depths and lengths were conducted and compared with predictions using the alignment rules and the net-section collapse load approach for single crack provided in ASME Code. It is shown that the trend of the predicted collapse bending stresses for the non-aligned twin cracked pipes using FE damage analysis are different from the ones using the alignment rule.
| Original language | English |
|---|---|
| Title of host publication | Codes and Standards |
| Publisher | American Society of Mechanical Engineers (ASME) |
| Volume | 1A-2018 |
| ISBN (Electronic) | 9780791851586 |
| DOIs | |
| Publication status | Published - 2018 Jan 1 |
| Event | ASME 2018 Pressure Vessels and Piping Conference, PVP 2018 - Prague, Czech Republic Duration: 2018 Jul 15 → 2018 Jul 20 |
Other
| Other | ASME 2018 Pressure Vessels and Piping Conference, PVP 2018 |
|---|---|
| Country | Czech Republic |
| City | Prague |
| Period | 18/7/15 → 18/7/20 |
ASJC Scopus subject areas
- Mechanical Engineering
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Nguyen, T. L., Lee, M. W., Hasegawa, K., & Kim, Y-J. (2018). Numerical study on longitudinal distance effect on failure stress of non-aligned twin cracked pipe. In Codes and Standards (Vol. 1A-2018). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/PVP201884838