A Numerical Simulation of the Crack Growth in a Smooth CT Specimen

W. Y. Yan; G. X. Shan; O. Kolednik; F. D. Fischer

A Numerical Simulation of the Crack Growth in a Smooth CT Specimen

W. Y. Yan, G. X. Shan, O. Kolednik, F. D. Fischer

Research output: Contribution to journal › Article › Research › peer-review

Abstract

The numerical simulation of the crack growth in Compact Tension specimens which are plain sided is presented. The curves of the local crack extension (Δa) along the crack front vs. the load line displacement (ν_LL) from a J_IC-multi-specimen test are used to control fracture initiation and crack growth. The agreement between the experimental and the computed load vs. displacement and J-integral vs. Δa curves is checked. Additionally, it is studied how some local parameters determined along the crack front, like the crack tip opening displacement (CTOD) or the triaxiality parameter σ_m/σ_eq (σ_m = mean stress, σ_eq =equivalent stress) change during the crack extension.

Original language	English
Pages (from-to)	179-184
Number of pages	6
Journal	Key Engineering Materials
Volume	145-149
Publication status	Published - 1 Dec 1998
Externally published	Yes

Keywords

Constraint
Crack Growth
Local CTOD
Three-Dimensional Numerical Simulation

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Cite this

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title = "A Numerical Simulation of the Crack Growth in a Smooth CT Specimen",

abstract = "The numerical simulation of the crack growth in Compact Tension specimens which are plain sided is presented. The curves of the local crack extension (Δa) along the crack front vs. the load line displacement (νLL) from a JIC-multi-specimen test are used to control fracture initiation and crack growth. The agreement between the experimental and the computed load vs. displacement and J-integral vs. Δa curves is checked. Additionally, it is studied how some local parameters determined along the crack front, like the crack tip opening displacement (CTOD) or the triaxiality parameter σm/σeq (σm = mean stress, σeq =equivalent stress) change during the crack extension.",

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AU - Yan, W. Y.

AU - Shan, G. X.

AU - Kolednik, O.

AU - Fischer, F. D.

PY - 1998/12/1

Y1 - 1998/12/1

N2 - The numerical simulation of the crack growth in Compact Tension specimens which are plain sided is presented. The curves of the local crack extension (Δa) along the crack front vs. the load line displacement (νLL) from a JIC-multi-specimen test are used to control fracture initiation and crack growth. The agreement between the experimental and the computed load vs. displacement and J-integral vs. Δa curves is checked. Additionally, it is studied how some local parameters determined along the crack front, like the crack tip opening displacement (CTOD) or the triaxiality parameter σm/σeq (σm = mean stress, σeq =equivalent stress) change during the crack extension.

AB - The numerical simulation of the crack growth in Compact Tension specimens which are plain sided is presented. The curves of the local crack extension (Δa) along the crack front vs. the load line displacement (νLL) from a JIC-multi-specimen test are used to control fracture initiation and crack growth. The agreement between the experimental and the computed load vs. displacement and J-integral vs. Δa curves is checked. Additionally, it is studied how some local parameters determined along the crack front, like the crack tip opening displacement (CTOD) or the triaxiality parameter σm/σeq (σm = mean stress, σeq =equivalent stress) change during the crack extension.

KW - Constraint

KW - Crack Growth

KW - Local CTOD

KW - Three-Dimensional Numerical Simulation

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JO - Key Engineering Materials

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