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J-integral solutions for shallow crack geometries under combined tension and bending

J-integral solutions for shallow crack geometries under combined tension and bending
J-integral solutions for shallow crack geometries under combined tension and bending
This paper presents J-integral solutions for geometries with shallow edge cracks (0.05 ?a/W? 0.1) subjected to combined tension and bending. Tension and bending is applied simultaneously and sequentially. Curves of J versus structural strain are obtained from two-dimensional plane strain finite element analyses using medium to low work hardening power laws to represent material behaviour. Empirical equations are derived from the finite element results to estimate the J-integrals, using previously developed J-estimation schemes for SENT and SENB specimens with only minor modifications. The predictions presented are invariably safe, but due to the complexity of the problems studied and the variability of the loadings considered, the degree of conservatism is found to be high in some cases.

shallow cracks, j integrals, fe solutions, combined tension/bending
8756-758X
611-622
Lau, C.L.
69b72f5a-127d-4bc4-9407-4a066b9150a7
Lee, M.M.K.
b0eec6ec-1557-494d-bbc5-4cd053cfbe46
Luxmoore, A.R.
307e05c5-bacc-4f32-9ea7-4363f2e526e8
Lau, C.L.
69b72f5a-127d-4bc4-9407-4a066b9150a7
Lee, M.M.K.
b0eec6ec-1557-494d-bbc5-4cd053cfbe46
Luxmoore, A.R.
307e05c5-bacc-4f32-9ea7-4363f2e526e8

Lau, C.L., Lee, M.M.K. and Luxmoore, A.R. (1996) J-integral solutions for shallow crack geometries under combined tension and bending. Fatigue & Fracture of Engineering Materials & Structures, 19 (5), 611-622. (doi:10.1111/j.1460-2695.1996.tb00997.x).

Record type: Article

Abstract

This paper presents J-integral solutions for geometries with shallow edge cracks (0.05 ?a/W? 0.1) subjected to combined tension and bending. Tension and bending is applied simultaneously and sequentially. Curves of J versus structural strain are obtained from two-dimensional plane strain finite element analyses using medium to low work hardening power laws to represent material behaviour. Empirical equations are derived from the finite element results to estimate the J-integrals, using previously developed J-estimation schemes for SENT and SENB specimens with only minor modifications. The predictions presented are invariably safe, but due to the complexity of the problems studied and the variability of the loadings considered, the degree of conservatism is found to be high in some cases.

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More information

Published date: May 1996
Keywords: shallow cracks, j integrals, fe solutions, combined tension/bending

Identifiers

Local EPrints ID: 75371
URI: http://eprints.soton.ac.uk/id/eprint/75371
ISSN: 8756-758X
PURE UUID: 4a4d0313-16c2-427c-9bf9-04208367b4af

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Date deposited: 11 Mar 2010
Last modified: 13 Mar 2024 22:51

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Contributors

Author: C.L. Lau
Author: M.M.K. Lee
Author: A.R. Luxmoore

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