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Numerical modelling of crack shielding and deflection in a multi-layered material system

Numerical modelling of crack shielding and deflection in a multi-layered material system
Numerical modelling of crack shielding and deflection in a multi-layered material system
Finite element analysis has been used to investigate the fatigue behaviour observed in testing a layered structure (representative of an automotive journal bearing). The aim of the analysis was to explain the deflection or bifurcation observed as a fatigue crack propagates through the multi-layered structure of a bearing. A fracture mechanics approach was adopted using detailed evaluations of the J-integral to assess and monitor both crack tip driving force and directional propensity with crack growth. Crack shielding or anti-shielding as well as deflection or bifurcation were conclusively linked to the difference between the fundamental elasto-plastic properties of the various constituent materials.
multi-layer materials, plain bearings, fatigue, crack shielding, crack deflection
0921-5093
11-22
Joyce, M.R.
e294d1ba-c37a-4149-b9c0-15095d643d3b
Reed, P.A.S
8b79d87f-3288-4167-bcfc-c1de4b93ce17
Syngellakis, S.
1279f4e2-97ec-44dc-b4c2-28f5ac9c2f88
Joyce, M.R.
e294d1ba-c37a-4149-b9c0-15095d643d3b
Reed, P.A.S
8b79d87f-3288-4167-bcfc-c1de4b93ce17
Syngellakis, S.
1279f4e2-97ec-44dc-b4c2-28f5ac9c2f88

Joyce, M.R., Reed, P.A.S and Syngellakis, S. (2003) Numerical modelling of crack shielding and deflection in a multi-layered material system. Materials Science and Engineering: A, 342 (1-2), 11-22. (doi:10.1016/S0921-5093(02)00279-4).

Record type: Article

Abstract

Finite element analysis has been used to investigate the fatigue behaviour observed in testing a layered structure (representative of an automotive journal bearing). The aim of the analysis was to explain the deflection or bifurcation observed as a fatigue crack propagates through the multi-layered structure of a bearing. A fracture mechanics approach was adopted using detailed evaluations of the J-integral to assess and monitor both crack tip driving force and directional propensity with crack growth. Crack shielding or anti-shielding as well as deflection or bifurcation were conclusively linked to the difference between the fundamental elasto-plastic properties of the various constituent materials.

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More information

Published date: 2003
Keywords: multi-layer materials, plain bearings, fatigue, crack shielding, crack deflection
Organisations: Engineering Sciences

Identifiers

Local EPrints ID: 22102
URI: http://eprints.soton.ac.uk/id/eprint/22102
ISSN: 0921-5093
PURE UUID: 6f55f26e-4658-4a40-acca-c29a62f1eef2
ORCID for P.A.S Reed: ORCID iD orcid.org/0000-0002-2258-0347

Catalogue record

Date deposited: 14 Mar 2006
Last modified: 16 Mar 2024 02:44

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Contributors

Author: M.R. Joyce
Author: P.A.S Reed ORCID iD
Author: S. Syngellakis

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