Stress Triaxiality as Fracture Toughness Transferability Parameter for Notched Specimens

O. Akourri; I. Elayachi; G. Pluvinage

doi:10.15866/irece.v6i2.7599

Stress Triaxiality as Fracture Toughness Transferability Parameter for Notched Specimens

O. Akourri^(1*), I. Elayachi⁽²⁾, G. Pluvinage⁽³⁾

^(*) Corresponding author

Authors' affiliations

DOI: https://doi.org/10.15866/irece.v6i2.7599

Abstract

The problem of fracture toughness transferability is treated by using the stress triaxiality and by introduction of a new transferability parameter called p. This parameter is a combination of effective critical stress triaxiality (mean value of stress triaxiality over effective distance) and multiplies by a geometrical function. Application of this method has been made on three point bending specimens made in XC 38 steel. Comparison of 2D and 3D approaches is made.
Copyright © 2015 Praise Worthy Prize - All rights reserved.

Keywords

Transferability Parameter; Stress Triaxiality; Notch Radius; Notch Depth; Steel

Full Text:

PDF

References

Betegon C, Hancock JW. Two parameter characteristics of elastic– plastic crack-tip fields. J. Appl. Mech.; 58, pp. 104–101 (1991).
http://dx.doi.org/10.1115/1.2897135

O’Dowd NP, Shih CF. Family of crack tip fields characterized by a triaxiality parameter I: Structure of fields. J. Mech. Phys. Solids; 39, pp. 898–1015 (1991).
http://dx.doi.org/10.1016/0022-5096(91)90049-t

Clausmeyer H, Kussmaul K, Roos E. Influence of stress state on the failure behaviour of cracked components made of steel. ASME, Appl. Mech. Rev. 44 (2) pp. 77–92 (1991).
http://dx.doi.org/10.1115/1.3119495

Ruggieri C., Gao X., Dodds R.H.; “Transferability of elastic-plastic fracture toughness using the Weibull stress approach: Significance of parameter calibration”; Engineering fracture mechanics 67, pp. 101-117, (2000).
http://dx.doi.org/10.1016/s0013-7944(00)00052-7

Elayachi Ilham, Akourri Omar and Pluvinage Guy. “Fracture toughness transferability for notched specimens” International conference on advance in Mechanical Engineering and Mechanics Hammamet, Tunisie, Dec. (2006).

Pluvinage G. “Fracture and Fatigue emanating from stress concentrators”; Editeur Kluwer, (2003).
http://dx.doi.org/10.1007/1-4020-2612-9

Castem 2000, Logiciel d’éléments finis développé par le département des études mécaniques et thermiques du commissariat français à l’énergie atomique C.E.A.

Pluvinage G., Azari Z., Kadi N., Dlouhy I., Kozak V. “Effect of ferritic microstructure on local damage zone distance associated with fracture near notch”. Theoritical and Applied Fra. Mechanics, N°31, pp. 149-156, (1999).
http://dx.doi.org/10.1016/s0167-8442(99)00009-9

Rice J.R and Tracey D.M Journal of Mechanics and Physics of Solids, 26, pp163-186, (1969).

Biel-Golaska M., “Analysis of cast steel fracture mechanisms for different states of stress”. Fatigue & fracture of engineering materials & structures 21, pp. 965-975, (1998).
http://dx.doi.org/10.1046/j.1460-2695.1998.00089.x

Cravero S. and Ruggieri C. “A Two-Parameter Framework to Describe Effects of Constraint Loss on Cleavage Fracture and Implications for Failure Assessments of Cracked Components”. J. of the Braz. Soc. of Mech. Sci. & Eng. Vol. 25, No. 4, pp. 403-412, (2003).
http://dx.doi.org/10.1590/s1678-58782003000400013

Lomakin .E.V “Stress and strain fields at a crack tip in solids with stress state dependant elastic properties under conditions of longitudinal shear”. ICF Interquadriennal Conference Moscow, Russia, July (2007).

Refbacks

There are currently no refbacks.

Username
Password
Remember me