Influence of hydrostatic stress on failure of axisymmetric notched specimens

Abstract To investigate the role of the hydrostatic stress on failure, some static and dynamic tensile tests on mild steel axisymmetric notched specimens are described in this paper. Finite–Element results and experimental data indicate that the failure site, for specimens having a small notch radius, occurs in regions of low triaxiality. Comparisons are made between Finite–Element and Bridgman analyses. The influence of some material parameters on the triaxiality levels is explored.

[1]  P. Church,et al.  DEFORMATION AND FRACTURE ; MODELLING TECHNIQUES TO TAKE ACCOUNT OF STRAIN-RATE BEHAVIOUR AND STRESS STATE , 1991 .

[2]  Lynn Seaman,et al.  Dynamic failure of solids , 1987 .

[3]  S. H. Goods,et al.  THE NUCLEATION OF CAVITIES BY PLASTIC DEFORMATION , 1983 .

[4]  Lallit Anand,et al.  Thermo-elasto-viscoplasticity of isotropic porous metals , 1993 .

[5]  C. E. Richards,et al.  A critical of carbide cracking mechanisms in ferride/carbide aggregates , 1970 .

[6]  J. Hancock.  Constraint and Stress State Effects in Ductile Fracture , 1992 .

[7]  Percy Williams Bridgman,et al.  Studies in large plastic flow and fracture , 1964 .

[8]  Viggo Tvergaard,et al.  An analysis of ductile rupture in notched bars , 1984 .

[9]  J. Hancock,et al.  On the mechanisms of ductile failure in high-strength steels subjected to multi-axial stress-states , 1976 .

[10]  J. W. Hancock,et al.  On the role of strain and stress state in ductile failure , 1983 .

[11]  U. S. Lindholm.  Book reviewMechanical properties at high rates of strain 1979: Institute of Physics Conference Series 47; published by the Institute of Physics, London, 1979; 412 pp.; price, £36.00 , 1981 .

[12]  F. Mudry,et al.  An experimental program for the validation of local ductile fracture criteria using axisymmetrically cracked bars and compact tension specimens , 1985 .

[13]  Viggo Tvergaard,et al.  VOID GROWTH AND FAILURE IN NOTCHED BARS , 1988 .

[14]  A. C. Mackenzie,et al.  On the influence of state of stress on ductile failure initiation in high strength steels , 1977 .

[15]  Rachid Chaouadi,et al.  Damage work as ductile fracture criterion , 1994 .

[16]  A. Pineau,et al.  Crack initiation and stable crack growth resistance in A508 steels in relation to inclusion distribution , 1981 .

[17]  U. S. Lindholm,et al.  Shock Wave and High-Strain-Rate Phenomena in Materials , 1992 .

[18]  F. A. McClintock,et al.  A Criterion for Ductile Fracture by the Growth of Holes , 1968 .

[19]  D. M. Tracey,et al.  On the ductile enlargement of voids in triaxial stress fields , 1969 .

[20]  S. H. Goods,et al.  Overview No. 1: The nucleation of cavities by plastic deformation , 1979 .