Friction stress effects on mode I crack growth predictions

Q. Chen; V.S. Deshpande; E. van der Giessen; A. Needleman

doi:10.1016/S1359-6462(02)00539-0

Friction stress effects on mode I crack growth predictions

Q. Chen, V.S. Deshpande, E. van der Giessen, A. Needleman

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The effect of a lattice friction stress on the monotonic growth of a plane strain mode I crack under small-scale yielding conditions is analyzed using discrete dislocation plasticity. When the friction stress is increased from zero to half the dislocation nucleation stress, the crack tip stress field changes from one characteristic of a plastic solid to one characteristic of an elastic solid, and the crack growth resistance decreases substantially.

Originele taal-2	English
Artikelnummer	PII S1359-6462(02)00539-0
Pagina's (van-tot)	755 - 759
Aantal pagina's	5
Tijdschrift	Scripta Materialia
Volume	48
Nummer van het tijdschrift	6
DOI's	https://doi.org/10.1016/S1359-6462(02)00539-0
Status	Published - 17-mrt.-2003

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title = "Friction stress effects on mode I crack growth predictions",

abstract = "The effect of a lattice friction stress on the monotonic growth of a plane strain mode I crack under small-scale yielding conditions is analyzed using discrete dislocation plasticity. When the friction stress is increased from zero to half the dislocation nucleation stress, the crack tip stress field changes from one characteristic of a plastic solid to one characteristic of an elastic solid, and the crack growth resistance decreases substantially.",

keywords = "dislocation, theory, fracture, micromechanical modeling, DISCRETE DISLOCATION ANALYSIS, TRANSITION, METALS",

author = "Q. Chen and V.S. Deshpande and Giessen, {E. van der} and A. Needleman",

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AU - Deshpande, V.S.

AU - Giessen, E. van der

AU - Needleman, A.

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N2 - The effect of a lattice friction stress on the monotonic growth of a plane strain mode I crack under small-scale yielding conditions is analyzed using discrete dislocation plasticity. When the friction stress is increased from zero to half the dislocation nucleation stress, the crack tip stress field changes from one characteristic of a plastic solid to one characteristic of an elastic solid, and the crack growth resistance decreases substantially.

AB - The effect of a lattice friction stress on the monotonic growth of a plane strain mode I crack under small-scale yielding conditions is analyzed using discrete dislocation plasticity. When the friction stress is increased from zero to half the dislocation nucleation stress, the crack tip stress field changes from one characteristic of a plastic solid to one characteristic of an elastic solid, and the crack growth resistance decreases substantially.

KW - dislocation

KW - theory

KW - fracture

KW - micromechanical modeling

KW - DISCRETE DISLOCATION ANALYSIS

KW - TRANSITION

KW - METALS

U2 - 10.1016/S1359-6462(02)00539-0

DO - 10.1016/S1359-6462(02)00539-0

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VL - 48

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EP - 759

JO - Scripta Materialia

JF - Scripta Materialia

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