On the effect of plastic constraint on ductile tearing in a structural steel

B. Cotterell; Q. F. Li; D. Z. Zhang; Y. W. Mai

doi:10.1016/0013-7944(85)90013-X

On the effect of plastic constraint on ductile tearing in a structural steel

B. Cotterell, Q. F. Li, D. Z. Zhang, Y. W. Mai

Research output: Journal article publication › Journal article › Academic research › peer-review

46 Citations (Scopus)

Abstract

The effect of plastic constraint on the initiation of ductile tears in a structural steel has been studied by measuring the crack opening displacement at initiation in 3-point bend specimens with deep and shallow notches. It is shown that δ_i for shallow notches where plastic flow reaches the surface is about twice that for deep notches. The crack opening displacement at maximum load is shown to be proportional to the specimen size. It is also shown that sidegrooves reduce this crack opening displacement.

Original language	English
Pages (from-to)	239-244
Number of pages	6
Journal	Engineering Fracture Mechanics
Volume	21
Issue number	2
DOIs	https://doi.org/10.1016/0013-7944(85)90013-X
Publication status	Published - 1985
Externally published	Yes

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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10.1016/0013-7944(85)90013-X

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AB - The effect of plastic constraint on the initiation of ductile tears in a structural steel has been studied by measuring the crack opening displacement at initiation in 3-point bend specimens with deep and shallow notches. It is shown that δi for shallow notches where plastic flow reaches the surface is about twice that for deep notches. The crack opening displacement at maximum load is shown to be proportional to the specimen size. It is also shown that sidegrooves reduce this crack opening displacement.

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On the effect of plastic constraint on ductile tearing in a structural steel

Abstract

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