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Elastic-plastic characterisation of aluminium bearing alloys

Elastic-plastic characterisation of aluminium bearing alloys
Elastic-plastic characterisation of aluminium bearing alloys
A method is proposed to determine the elasto-plastic properties of a thin aluminium alloy lining of a bearing system from micro-indentation tests. This indentation process was modelled using an axi-symmetric FE model which was validated against experimental force-indentation curves from materials with known elasto-plastic properties. A fuller database of force-indentation curves has been generated by running the FE model with a range of elasto-plastic properties. This larger database has been used in adaptive numerical modelling to derive a generic model for the indent size as a function of load, elastic limit, yield strength and strain hardening coefficient and exponent in aluminium alloys. The adaptive numerical model was subsequently used to interpolate between the time-intensive FE results. Based on iterations of the most appropriate adaptive model, the elastic limit, yield strength and strain hardening exponent of a bearing alloy have been determined from the experimental micro hardness force-indentation depth curves for the same material.
elasto-plastic properties, adaptive numerical modelling, micro-hardness, FEM
0878498990
396-402
1091-1096
Trans Tech
Liu, J.
516e902e-000e-4f9c-b9bc-bac18b1f5ade
Christensen, S.W.
c5995cdb-2a14-478a-8c98-6c9f11d65b09
Reed, P.A.S.
8b79d87f-3288-4167-bcfc-c1de4b93ce17
Syngellakis, S.
1279f4e2-97ec-44dc-b4c2-28f5ac9c2f88
Gregson, P.J.
Harris, S.
Liu, J.
516e902e-000e-4f9c-b9bc-bac18b1f5ade
Christensen, S.W.
c5995cdb-2a14-478a-8c98-6c9f11d65b09
Reed, P.A.S.
8b79d87f-3288-4167-bcfc-c1de4b93ce17
Syngellakis, S.
1279f4e2-97ec-44dc-b4c2-28f5ac9c2f88
Gregson, P.J.
Harris, S.

Liu, J., Christensen, S.W., Reed, P.A.S. and Syngellakis, S. (2002) Elastic-plastic characterisation of aluminium bearing alloys. Gregson, P.J. and Harris, S. (eds.) In Aluminium Alloys 2002: Their Physical and Mechanical Properties. Trans Tech. pp. 1091-1096 .

Record type: Conference or Workshop Item (Paper)

Abstract

A method is proposed to determine the elasto-plastic properties of a thin aluminium alloy lining of a bearing system from micro-indentation tests. This indentation process was modelled using an axi-symmetric FE model which was validated against experimental force-indentation curves from materials with known elasto-plastic properties. A fuller database of force-indentation curves has been generated by running the FE model with a range of elasto-plastic properties. This larger database has been used in adaptive numerical modelling to derive a generic model for the indent size as a function of load, elastic limit, yield strength and strain hardening coefficient and exponent in aluminium alloys. The adaptive numerical model was subsequently used to interpolate between the time-intensive FE results. Based on iterations of the most appropriate adaptive model, the elastic limit, yield strength and strain hardening exponent of a bearing alloy have been determined from the experimental micro hardness force-indentation depth curves for the same material.

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More information

Published date: 2002
Venue - Dates: 8th International Conference ICAA8, 2002-07-02 - 2002-07-05
Keywords: elasto-plastic properties, adaptive numerical modelling, micro-hardness, FEM

Identifiers

Local EPrints ID: 22044
URI: http://eprints.soton.ac.uk/id/eprint/22044
ISBN: 0878498990
PURE UUID: d0a664e3-78c7-4188-ae39-75f698093e34
ORCID for P.A.S. Reed: ORCID iD orcid.org/0000-0002-2258-0347

Catalogue record

Date deposited: 20 Mar 2006
Last modified: 20 Jul 2019 01:21

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Contributors

Author: J. Liu
Author: S.W. Christensen
Author: P.A.S. Reed ORCID iD
Author: S. Syngellakis
Editor: P.J. Gregson
Editor: S. Harris

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