According to Bridgman’s analysis, the initial stress triaxility( σ )* for axisymmetric rounded specimens can be obtained with the subsequent expression:
( σ )* = 1/3 + ln(1 + r/2R)
But In case of flat specimens, how one can calculate this triaxiality ratio to find fracture strain.
εf = (D1 + D2*exp(-σ */3) )*( 1 + D3*ln( ε .))
s. Béatrice Marianne Ewalds-Kvist
On the Application of Stress Triaxiality Formula for Plane Strain Fracture Testing
- April 2009
- Journal of Engineering Materials and Technology 131(2)
- DOI:
- 10.1115/1.3078390
- 📷Yuanli Bai
- 📷X. Teng
- Tomasz Wierzbicki
Contact these persons, they are here on RG:
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Krishna Kumar
Yeah. I had already got their paper. But I didn't know that they do have a RG account.
Thanks!
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