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Eigenstrain modelling of residual stresses generated by arrays of LSP shots

Eigenstrain modelling of residual stresses generated by arrays of LSP shots
Eigenstrain modelling of residual stresses generated by arrays of LSP shots
This paper presents an eigenstrain (misfit strain) model to predict the residual stresses (RS) generated by arrays of laser shock peening (LSP) shots (i.e. adjacent to each other over a surface patch or overlapping layers of LSP shots)where the use of a completely explicit analysis may be impractical.The results show that the LSP process parameters can be directly linked to the underlying eigenstrain distribution, which is shown to be approximately uniform over the area of the pulse and varies only with depth. Hence, the effect of multiple LSP shots at different locations can be rapidly assessed by superposition of eigenstrain distributions
1327-1332
Achintha, Mithila
8163c322-de6d-4791-bc31-ba054cc0e07d
Nowell, David
63daaf71-e1e5-4d86-9ce9-586f82c4f12a
Achintha, Mithila
8163c322-de6d-4791-bc31-ba054cc0e07d
Nowell, David
63daaf71-e1e5-4d86-9ce9-586f82c4f12a

Achintha, Mithila and Nowell, David (2011) Eigenstrain modelling of residual stresses generated by arrays of LSP shots. Procedia Engineering, 10, 1327-1332. (doi:10.1016/j.proeng.2011.04.221).

Record type: Article

Abstract

This paper presents an eigenstrain (misfit strain) model to predict the residual stresses (RS) generated by arrays of laser shock peening (LSP) shots (i.e. adjacent to each other over a surface patch or overlapping layers of LSP shots)where the use of a completely explicit analysis may be impractical.The results show that the LSP process parameters can be directly linked to the underlying eigenstrain distribution, which is shown to be approximately uniform over the area of the pulse and varies only with depth. Hence, the effect of multiple LSP shots at different locations can be rapidly assessed by superposition of eigenstrain distributions

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Published date: 2011
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 356866
URI: http://eprints.soton.ac.uk/id/eprint/356866
PURE UUID: f3719125-cb69-4644-8d41-e63bd2674009
ORCID for Mithila Achintha: ORCID iD orcid.org/0000-0002-1732-3514

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Date deposited: 16 Sep 2013 07:48
Last modified: 14 Mar 2024 14:53

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Contributors

Author: Mithila Achintha ORCID iD
Author: David Nowell

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