A new approach for ductile fracture prediction on Al 2024-T351 alloy

Abstract The aim of this investigation is to establish a universal, accurate and efficient fracture criterion for ductile metals. First, new experiments including pure torsion, uniaxial tension followed by torsion and non-proportional biaxial compression on the Al 2024-T351 alloy are presented. These experimental results, along with published data on same material by Stoughton and Yoon (2011) , are used to establish a phenomenological fracture criterion using the magnitude of stress vector and the first invariant of stress tensor. The results are compared to, and shown better than, the maximum shear stress fracture criterion proposed by Stoughton and Yoon, J 2 fracture criterion and the Xue–Wierzbicki fracture criterion. Moreover, the proposed fracture criterion is used to correlate the ductile fracture data of another aluminium alloy published by Brunig et al. (2008) .

[1]  F. Mcclintock,et al.  Ductile fracture by hole growth in shear bands , 1966 .

[2]  Xiaosheng Gao,et al.  Effects of the stress state on plasticity and ductile failure of an aluminum 5083 alloy , 2009 .

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

[4]  G. Mirone,et al.  A local viewpoint for evaluating the influence of stress triaxiality and Lode angle on ductile failure and hardening , 2010 .

[5]  R. Schiffmann,et al.  On the application of the damage work density as a new initiation criterion for ductile fracture , 2003 .

[6]  V. Tvergaard.  Influence of voids on shear band instabilities under plane strain conditions , 1981 .

[7]  Yonggang Huang,et al.  Effects of superimposed hydrostatic pressure on sheet metal formability , 2009 .

[8]  Jean-Louis Chaboche,et al.  A review of some plasticity and viscoplasticity constitutive theories , 2008 .

[9]  Babak Farrokh,et al.  Multiaxial and non-proportional loading responses, anisotropy and modeling of Ti–6Al–4V titanium alloy over wide ranges of strain rates and temperatures , 2007 .

[10]  Imad Barsoum,et al.  Rupture mechanisms in combined tension and shear : Experiments , 2007 .

[11]  F. Pires,et al.  An assessment of isotropic constitutive models for ductile fracture under high and low stress triaxiality , 2012 .

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

[13]  T. Wierzbicki,et al.  Calibration and evaluation of seven fracture models , 2005 .

[14]  Akhtar S. Khan,et al.  Behaviors of three BCC metal over a wide range of strain rates and temperatures: experiments and modeling , 1999 .

[15]  Ahmed Benallal,et al.  Flow and fracture characteristics of aluminium alloy AA5083–H116 as function of strain rate, temperature and triaxiality , 2004 .

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

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

[18]  N. Venkata Reddy,et al.  Ductile fracture criteria and its prediction in axisymmetric drawing , 2000 .

[19]  J. Chaboche.  Continuum Damage Mechanics: Part I—General Concepts , 1988 .

[20]  Michael Brünig,et al.  A ductile damage criterion at various stress triaxialities , 2008 .

[21]  Jeong Whan Yoon,et al.  A new approach for failure criterion for sheet metals , 2011 .

[22]  J. D. Embury,et al.  A model of ductile fracture based on the nucleation and growth of voids , 1981 .

[23]  H. Yang,et al.  Ductile fracture: Experiments and computations , 2011 .

[24]  J. Lemaître.  A CONTINUOUS DAMAGE MECHANICS MODEL FOR DUCTILE FRACTURE , 1985 .

[25]  Norman Jones,et al.  Influence of hydrostatic stress on failure of axisymmetric notched specimens , 1999 .

[26]  Moriya Oyane,et al.  Criteria of Ductile Fracture Strain , 1972 .

[27]  O. Richmond,et al.  Tensile fracture and fractographic analysis of 1045 spheroidized steel under hydrostatic pressure , 1990 .

[28]  Akhtar S. Khan,et al.  Continuum theory of plasticity , 1995 .

[29]  A. Gurson.  Continuum Theory of Ductile Rupture by Void Nucleation and Growth: Part I—Yield Criteria and Flow Rules for Porous Ductile Media , 1977 .

[30]  I. French,et al.  Tensile fracture of free machining brass as a function of hydrostatic pressure , 1973 .

[31]  A. Needleman,et al.  Analysis of the cup-cone fracture in a round tensile bar , 1984 .

[32]  Michael Brünig,et al.  Simulation of damage evolution in ductile metals undergoing dynamic loading conditions , 2011 .

[33]  T. E. Davidson,et al.  The tensile fracture characteristics of metals under hydrostatic pressures to 23 kilobars , 1966 .

[34]  J. Hancock,et al.  Ductile failure by void nucleation, growth and coalescence , 1984 .

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

[36]  T. Wierzbicki,et al.  A new model of metal plasticity and fracture with pressure and Lode dependence , 2008 .

[37]  G. R. Johnson,et al.  Fracture characteristics of three metals subjected to various strains, strain rates, temperatures and pressures , 1985 .

[38]  Yingbin Bao,et al.  Prediction of ductile crack formation in uncracked bodies , 2003 .

[39]  G. Mirone.  A new model for the elastoplastic characterization and the stress-strain determination on the necking section of a tensile specimen , 2004 .

[40]  T. Wierzbicki,et al.  On fracture locus in the equivalent strain and stress triaxiality space , 2004 .