THE GURSON-TVERGAARD-NEEDLEMAN-MODEL FOR RATE AND TEMPERATURE-DEPENDENT MATERIALS WITH ISOTROPIC AND KINEMATIC HARDENING

Authors
HAO S BROCKS W
Citation
S. Hao et W. Brocks, THE GURSON-TVERGAARD-NEEDLEMAN-MODEL FOR RATE AND TEMPERATURE-DEPENDENT MATERIALS WITH ISOTROPIC AND KINEMATIC HARDENING, Computational mechanics, 20(1-2), 1997, pp. 34-40
Citations number
25
Categorie Soggetti
Mechanics
Journal title
Computational mechanics → ACNP
ISSN journal
01787675
Volume
20
Issue
1-2
Year of publication
1997
Pages
34 - 40
Database
ISI
SICI code
0178-7675(1997)20:1-2<34:TGFRAT>2.0.ZU;2-H
Abstract
Based on the upper bound solution of cell models under dynamic or cree p loading conditions, the Gurson-Tvergaard-Needleman (GTN) constitutiv e law of ductile fracture for rate and temperature-dependent materials with isotropic and kinematic hardening has been established. Two addi tional parameters, which account for the influences of strain rate, in ertia and the average distance between voids, have been introduced in the GTN yield criterion, 2D and 3D analysis has been performed for dif ferent metals. It can be concluded that the GTN model is a powerful to ol for crack growth analysis.