The role of cohesive properties on intergranular crack propagation in brittle polycrystals

Z. Shabir; E. Van der Giessen; C. A. Duarte; A. Simone

doi:10.1088/0965-0393/19/3/035006

The role of cohesive properties on intergranular crack propagation in brittle polycrystals

Z. Shabir^*, E. Van der Giessen, C. A. Duarte, A. Simone

^*Bijbehorende auteur voor dit werk

Onderzoeksoutput › Academic › peer review

28 Citaten (Scopus)

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Samenvatting

We analyze intergranular brittle cracking of polycrystalline aggregates by means of a generalized finite element method for polycrystals with cohesive grain boundaries and linear elastic grains. Many random realizations of a polycrystalline topology are considered and it is shown that the resulting crack paths are insensitive to key cohesive law parameters such as maximum cohesive strength and critical fracture energy. Normal and tangential contributions to the dissipated energy are thoroughly investigated with respect to mesh refinement, cohesive law parameters and randomness of the underlying polycrystalline microstructure.

Originele taal-2	English
Artikelnummer	035006
Pagina's (van-tot)	035006-1-035006-21
Aantal pagina's	21
Tijdschrift	Modelling and Simulation in Materials Science and Engineering
Volume	19
Nummer van het tijdschrift	3
DOI's	https://doi.org/10.1088/0965-0393/19/3/035006
Status	Published - apr.-2011

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title = "The role of cohesive properties on intergranular crack propagation in brittle polycrystals",

abstract = "We analyze intergranular brittle cracking of polycrystalline aggregates by means of a generalized finite element method for polycrystals with cohesive grain boundaries and linear elastic grains. Many random realizations of a polycrystalline topology are considered and it is shown that the resulting crack paths are insensitive to key cohesive law parameters such as maximum cohesive strength and critical fracture energy. Normal and tangential contributions to the dissipated energy are thoroughly investigated with respect to mesh refinement, cohesive law parameters and randomness of the underlying polycrystalline microstructure.",

keywords = "FINITE-ELEMENT-METHOD, NUMERICAL SIMULATIONS, ZONE MODELS, TRANSGRANULAR FRACTURE, GROWTH, MICROSTRUCTURES, SOLIDS, DELAMINATION, CERAMICS, FAILURE",

author = "Z. Shabir and {Van der Giessen}, E. and Duarte, {C. A.} and A. Simone",

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language = "English",

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T1 - The role of cohesive properties on intergranular crack propagation in brittle polycrystals

AU - Shabir, Z.

AU - Van der Giessen, E.

AU - Duarte, C. A.

AU - Simone, A.

PY - 2011/4

Y1 - 2011/4

N2 - We analyze intergranular brittle cracking of polycrystalline aggregates by means of a generalized finite element method for polycrystals with cohesive grain boundaries and linear elastic grains. Many random realizations of a polycrystalline topology are considered and it is shown that the resulting crack paths are insensitive to key cohesive law parameters such as maximum cohesive strength and critical fracture energy. Normal and tangential contributions to the dissipated energy are thoroughly investigated with respect to mesh refinement, cohesive law parameters and randomness of the underlying polycrystalline microstructure.

AB - We analyze intergranular brittle cracking of polycrystalline aggregates by means of a generalized finite element method for polycrystals with cohesive grain boundaries and linear elastic grains. Many random realizations of a polycrystalline topology are considered and it is shown that the resulting crack paths are insensitive to key cohesive law parameters such as maximum cohesive strength and critical fracture energy. Normal and tangential contributions to the dissipated energy are thoroughly investigated with respect to mesh refinement, cohesive law parameters and randomness of the underlying polycrystalline microstructure.

KW - FINITE-ELEMENT-METHOD

KW - NUMERICAL SIMULATIONS

KW - ZONE MODELS

KW - TRANSGRANULAR FRACTURE

KW - GROWTH

KW - MICROSTRUCTURES

KW - SOLIDS

KW - DELAMINATION

KW - CERAMICS

KW - FAILURE

U2 - 10.1088/0965-0393/19/3/035006

DO - 10.1088/0965-0393/19/3/035006

M3 - Article

VL - 19

SP - 035006-1-035006-21

JO - Modelling and Simulation in Materials Science and Engineering

JF - Modelling and Simulation in Materials Science and Engineering

SN - 0965-0393

IS - 3

M1 - 035006

ER -