Experiments on stress-triaxiality dependence of material behavior of aluminum alloys

The paper presents and discusses experimental procedures, visual observations and test results considered important to obtain data that can be used in validation of constitutive relations and failure criteria. The aim is to investigate the combined effects of stress intensity, stress-triaxiality and Lode parameter on the material response and failure behavior of aluminum alloys. Smooth and pre-notched tensile and shear specimens were manufactured from both very thin sheets and thicker plates to cover a wide range of stress triaxialities and Lode parameters. In addition, modified Arcan specimens were designed allowing investigation of the effect of sudden changes in stress states and deformation modes on the material behavior.

[1]  S. Dey,et al.  Strength and ductility of Weldox 460 E steel at high strain rates, elevated temperatures and various stress triaxialities , 2005 .

[2]  Golam Newaz,et al.  Ductile damage evolution under triaxial state of stress: theory and experiments , 2005 .

[3]  Odd Sture Hopperstad,et al.  On the influence of stress triaxiality and strain rate on the behaviour of a structural steel. Part II. Numerical study , 2003 .

[4]  Michael Brünig,et al.  An anisotropic ductile damage model based on irreversible thermodynamics , 2003 .

[5]  George Z. Voyiadjis,et al.  Advances in Damage Mechanics: Metals and Metal Matrix Composites With an Introduction to Fabric Tensors , 1999 .

[6]  Mark F. Horstemeyer,et al.  Numerical, experimental, nondestructive, and image analyses of damage; progression in cast A356 aluminium notch tensile bars , 2013 .

[7]  Yun-Jae Kim,et al.  Development of stress-modified fracture strain for ductile failure of API X65 steel , 2007 .

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

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

[10]  V. Tvergaard.  Material Failure by Void Growth to Coalescence , 1989 .

[11]  Jean-Louis Chaboche,et al.  Continuous damage mechanics — A tool to describe phenomena before crack initiation☆ , 1981 .

[12]  Jacques Besson,et al.  Anisotropic ductile fracture: Part I: experiments , 2004 .

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

[14]  T. Børvik,et al.  On the influence of stress triaxiality and strain rate on the behaviour of a structural steel. Part I. Experiments , 2003 .

[15]  G. Mirone,et al.  Role of stress triaxiality in elastoplastic characterization and ductile failure prediction , 2007 .

[16]  Bhushan Lal Karihaloo,et al.  Comprehensive structural integrity , 2003 .

[17]  Tomasz Wierzbicki,et al.  On the cut-off value of negative triaxiality for fracture , 2005 .

[18]  Jean Lemaitre,et al.  A Course on Damage Mechanics , 1992 .

[19]  J. Chaboche.  Continuum Damage Mechanics: Part II—Damage Growth, Crack Initiation, and Crack Growth , 1988 .

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

[21]  Jong-Hyun Baek,et al.  Ductile failure analysis of API X65 pipes with notch-type defects using a local fracture criterion , 2007 .

[22]  Z. Hashin,et al.  A method to produce uniform plane-stress states with applications to fiber-reinforced materials , 1978 .

[23]  M. Brünig.  Numerical analysis of anisotropic ductile continuum damage , 2003 .

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

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

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

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

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

[29]  Domenico Gentile,et al.  CDM modeling of ductile failure in ferritic steels: Assessment of the geometry transferability of model parameters , 2006 .