Stress state dependence of ductile damage and fracture behavior: Experiments and numerical simulations

Brünig, Michael; Brenner, Daniel; Gerke, Steffen

doi:10.1016/j.engfracmech.2015.05.022

Cited by 90 publications

(50 citation statements)

References 43 publications

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“…Novel approaches for the prediction of ductile fracture 5 under different stress states (Khan and Liu, 2012a,b) have provided insights to ductile damage and failure. Stress-state dependence of ductile failure has also been recently investigated, both experimentally and numerically, in the works of Brünig et al (2015). Fundamental to these works is the recognition that ductile failure occurs by the growth and coalescence of microscopic voids (McClintock, 1968;Rice and Tracey, 1969;Gurson, 1977).…”

Section: Introductionmentioning

confidence: 97%

Void behaviors from low to high triaxialities: Transition from void collapse to void coalescence

Liu

Wong

Guo

2016

International Journal of Plasticity

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Section: Introductionmentioning

confidence: 97%

Void behaviors from low to high triaxialities: Transition from void collapse to void coalescence

Liu

Wong

Guo

2016

International Journal of Plasticity

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“…In literature the former type is referred to as coupled and the latter as uncoupled fracture modeling. In the field of physics based, coupled, constitutive and ductile fracture models the stress-state dependence caused by growth and coalescence of micro-defects using numerical simulations of unit cells and experimental observations over a wide range of triaxialities is studied and good correlation is found [17,18]. Li et al [19] present a detailed review of coupled and uncoupled damage criteria which are implemented in a commercially available FE code and compared to experimental results of tensile and compression tests with different specimen geometries.…”

Section: Introductionmentioning

confidence: 99%

Characterization of ductile fracture properties of quench-hardenable boron steel: Influence of microstructure and processing conditions

Golling

Östlund

Oldenburg

2016

Materials Science and Engineering: A

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Developments of the hot stamping technology have enabled the production of components with differential microstructure composition and mechanical properties. These can increase the performance of certain crash-relevant automotive structures by combining high intrusion protection and energy absorption. This paper presents a comprehensive experimental investigation on the flow and ductile fracture properties of boron-alloyed steel with a wide range of different microstructure compositions. Three types of dual phase microstructures at three different volume fractions, and one triple phase grade, were generated by thermal treatment. Flow curves extending beyond necking and the equivalent plastic strain to fracture for each grade was determined by tensile testing using fullfield measurements. The influence of phase composition and microstructural parameters were further investigated by means of a multi-scale modeling approach based on mean-field homogenization in combination with local fracture criteria. Inter-phase and intra-phase fracture mechanisms were considered by adopting two separate fracture criteria formulated in terms of the local average stress field. The micromechanical model captures with useful accuracy the strong influence of microstructure and processing conditions on the flow and fracture properties, implying promising prospects of mean-field homogenization for the constitutive modeling of hot stamped components.

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“…Large inelastic deformations including the evolution of damage and final failure in ductile metals can be modeled by the continuum framework presented in [2,3,6]. Here the stress-state-dependent damage behavior is briefly outlined.…”

Section: Continuum Damage Modelmentioning

confidence: 99%

New biaxially loaded specimens for the material parameter identification of ductile damage

Gerke

Schmidt

Brünig

2018

Proc Appl Math and Mech

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The paper deals with new biaxial experiments to study the damage and fracture behavior of ductile sheet metal. For this purpose the H-specimen has been specially designed and is subjected to different proportional loadings within this context.The stress state dependent damage and fracture behavior can be described by a phenomenological continuum damage and fracture model which is briefly presented. In continuation results of new biaxial experiments are given which facilitate the study of different damage mechanisms in a well controlled way. The proposed H-specimen is applied for shear-tension as well as for shear-compression load cases and can be used to evaluate the corresponding continuum damage model. Furthermore a perspective to future work is given.

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Stress state dependence of ductile damage and fracture behavior: Experiments and numerical simulations

Cited by 90 publications

References 43 publications

Void behaviors from low to high triaxialities: Transition from void collapse to void coalescence

Void behaviors from low to high triaxialities: Transition from void collapse to void coalescence

Characterization of ductile fracture properties of quench-hardenable boron steel: Influence of microstructure and processing conditions

New biaxially loaded specimens for the material parameter identification of ductile damage

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