Voids Nucleation at Inclusions of Various Shapes in Front of the Crack in Plane Strain

Neimitz, A.; Janus, U.

doi:10.1515/amm-2016-0259

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…The number of the failed inclusions is a function of an effective plastic strain and such a relation was established experimentally. Detailed analysis of the stress fields around these inclusions were presented in papers [4] and [5]. The critical stress for TiN was estimated at the level of 1600 MPa and for MnS at the level of 1400 MPa.…”

Section: The Cellular Automata Modelmentioning

confidence: 99%

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The Cellular Automata Theory in Fracture Mechanisms Predictions

Neimitz

Janus

2016

SSP

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In the presentation the cellular automata theory is applied to model the evolution of cleavage and ductile fracture mechanisms in front of the crack in three-point-bent specimens containing crack, made of Hardox-400 steel. The experimental and numerical results were used to define: dead elements, weakened elements and healthy elements. One element in the cellular automata model represents one grain. In some of elements large inclusions/interstitials are present. They are randomly distributed; however, to some degree the distribution of these inclusions depend on the strain level. Each element of the cellular automata can change the actual state due to the primary stress distribution, orientation of the cleavage planes {100} and the neighborhood of the fractured grain. The computer program allows for reproduction of the fractured surface as well as to simulate fracture mechanisms in various geometrical and temperature conditions.

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Section: The Cellular Automata Modelmentioning

confidence: 99%

“…2b.) Next parameter, which was considered in the evolution receipts of the CA cells is the ratio of the stress level in a unite cell containing inclusion (weakened cell) and in a cell without inclusion [5]. It turns out that this parameter is not important one and the ratio does not depend on a shape of inclusion.…”

Section: The Cellular Automata Modelmentioning

confidence: 99%