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Continuous-Discontinuous Formulation For Ductile Fracture

A Ductile Damage Nonlocal Model of Integral-type at Finite Strains: Formulation...

A Comparison of Shear Mechanisms for the Prediction of Ductile Failure under Lo...

Purpose - The purpose of this paper is to perform a numerical assessment of two recently proposed extensions of the Gurson-Tveegard-Needleman ductile damage constitutive model under low stress triaxiality. Design/methodology/ approach - One of the most widely used ductile damage models is the so-called Gurson-Tveegard-Needleman model, commonly known as GTN model. The GTN model has embedded into its damage formu...

Theoretical and numerical issues on ductile failure prediction- An overview

AN IMPLICIT NUMERICAL INTEGRATION ALGORITHM FOR BAI & WIERZBICKI (2007) ELASTO-...

NUMERICAL INTEGRATION ALGORITHM OF A NEW MODEL FOR METAL PLASTICITY AND FRACTUR...

This paper describes an efficient numerical integration algorithm of a new model for metal plasticity and fracture [2]. The constitutive equations of the material model critically include both the effect of pressure through the triaxiality ratio and the effect of third deviatoric stress invariant through the lode angle in the description of material. The necessary steps required to implement the model within an...

Evaluation of ductile fracture in sheet metal forming using a damage model

Continuous Damage Mechanics (CDM) may constitute an alternative to the traditional use of Forming Limit Diagrams (FLDs) to predict the onset of formability in sheet metal forming [1]. In CDM, at the constitutive level, a damage variable is introduced to model, at the macro scale, the internal material degradation due to micro-defects that occur during plastic loading. This approach is used in this work and the ...

Evaluation of ductile fracture in sheet metal forming using a damage model

Continuous Damage Mechanics (CDM) may constitute an alternative to the traditional use of Forming Limit Diagrams (FLDs) to predict the onset of formability in sheet metal forming [1]. In CDM, at the constitutive level, a damage variable is introduced to model, at the macro scale, the internal material degradation due to micro-defects that occur during plastic loading. This approach is used in this work and the ...

A comparison of models for ductile fracture prediction in forging processes

A comparison of meshless and finite element approaches to ductile damage in for...