Characterization of Ductile Failure Behavior of the Ferritic Steel Using Damage Mechanics Modeling Approach

Pawel Kucharczyk; Sebastian Münstermann

doi:10.4028/www.scientific.net/KEM.525-526.469

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 525-526Characterization of Ductile Failure Behavior of...

Characterization of Ductile Failure Behavior of the Ferritic Steel Using Damage Mechanics Modeling Approach

Abstract:

A ductile failure is characterized by pronounced plastic deformations which involve significant plastic strains. The modeling of this failure behavior requires a precise description of the material plasticity starting from the crack initiation, its propagation through the material to the final fracture. The classical theory of metal plasticity based on the von Mises or Tresca formulations assumes that the effect of hydrostatic pressure on the flow potential is insignificant. Furthermore, it postulates that the flow stress is independent of the third stress invariant of the deviatoric stress tensor. The scientific findings from last few years show, however, that these both quantities should be considered for the precise description of plasticity, especially, of the real materials [1-4].

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Periodical:

Key Engineering Materials (Volumes 525-526)

Pages:

469-472

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.525-526.469

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Online since:

November 2012

Authors:

Pawel Kucharczyk, Sebastian Münstermann

Keywords:

Crack Initiation, Damage Mechanics Model, Ductile Damage, Failure Behavior, FEM Simulation

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