Abstract
This paper proposes a robust method for the Ramberg-Osgood (R-O) fit to accurately estimate elastic-plastic J from engineering fracture mechanics analysis based on deformation plasticity. The proposal is based on engineering stress-strain data to determine the R-O parameters, instead of true stress-strain data. Moreover, for practical applications, the method is given not only for the case when full stress-strain data are available but also for the case when only yield and tensile strengths are available. Reliability of the proposed method for the R-O fit is validated against detailed 3-D finite element (FE) analyses for circumferential through-wall cracked pipes under global bending using two different materials, stainless steel and ferritic steel.
| Original language | English |
|---|---|
| Pages (from-to) | 195-200 |
| Number of pages | 6 |
| Journal | Key Engineering Materials |
| Volume | 261-263 |
| Issue number | I |
| State | Published - 2004 |
| Event | Advances in Fracture and Failure Prevention: Proceedings of the Fifth International Conference on Fracture and Strength of Solids (FEOFS2003): Second International Conference on Physics and Chemistry of Fracture and Failure Prevention (2nd ICPCF) - Sendai, Japan Duration: 20 Oct 2003 → 22 Oct 2003 |
Keywords
- Circumferential Through-Wall Crack
- J-Integral
- Leak-Before-Break
- Ramberg-Osgood