Stress relaxation in shot–peened geometric features subjected to fatigue: experiments and modelling
Stress relaxation in shot–peened geometric features subjected to fatigue: experiments and modelling
This paper investigates experimentally and numerically the degree to which the stress relaxation in simple shot-peened geometries can be modelled by using a knowledge of simplified eigenstrain distributions. The residual stress generated due to shot peening is determined as the elastic response of the whole component when the plastic strains caused by the process are incorporated as an eigenstrain in an appropriate finite element (FE) model. The application of a subsequent live load is then modelled as an additional load step in the FE model which will superpose the effect of this loading on the residual stress field. The results show that the hybrid eigenstrain/FE approach is particularly useful in predicting residual stress relaxation in shot-peened components.
eigenstrain, FE analysis, residual stress, stress relaxation
729-735
Achintha, Mithila
8163c322-de6d-4791-bc31-ba054cc0e07d
You, Chao
1970d34b-ab33-4098-9363-2df30f36dda1
He, Binyan
0c154394-797d-42ad-b812-3fbbaea0238a
Soady, K.A.
5a0739bd-5c9b-4b49-b4c7-105a79719a63
Reed, P.A.S.
8b79d87f-3288-4167-bcfc-c1de4b93ce17
August 2014
Achintha, Mithila
8163c322-de6d-4791-bc31-ba054cc0e07d
You, Chao
1970d34b-ab33-4098-9363-2df30f36dda1
He, Binyan
0c154394-797d-42ad-b812-3fbbaea0238a
Soady, K.A.
5a0739bd-5c9b-4b49-b4c7-105a79719a63
Reed, P.A.S.
8b79d87f-3288-4167-bcfc-c1de4b93ce17
Achintha, Mithila, You, Chao, He, Binyan, Soady, K.A. and Reed, P.A.S.
(2014)
Stress relaxation in shot–peened geometric features subjected to fatigue: experiments and modelling.
[in special issue: Residual Stresses IX]
Advanced Materials Research, 996, .
(doi:10.4028/www.scientific.net/AMR.996.729).
Abstract
This paper investigates experimentally and numerically the degree to which the stress relaxation in simple shot-peened geometries can be modelled by using a knowledge of simplified eigenstrain distributions. The residual stress generated due to shot peening is determined as the elastic response of the whole component when the plastic strains caused by the process are incorporated as an eigenstrain in an appropriate finite element (FE) model. The application of a subsequent live load is then modelled as an additional load step in the FE model which will superpose the effect of this loading on the residual stress field. The results show that the hybrid eigenstrain/FE approach is particularly useful in predicting residual stress relaxation in shot-peened components.
Text
AMR.996.729.pdf
- Accepted Manuscript
More information
Published date: August 2014
Venue - Dates:
9th European Conference on Residual Stresses (ECRS-9), Troyes, France, 2014-07-07 - 2014-07-10
Keywords:
eigenstrain, FE analysis, residual stress, stress relaxation
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 368483
URI: http://eprints.soton.ac.uk/id/eprint/368483
PURE UUID: f35e9e3f-91ad-4ba0-9a36-a864e7c3ce00
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Date deposited: 15 Sep 2014 15:51
Last modified: 15 Mar 2024 02:45
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Contributors
Author:
Mithila Achintha
Author:
Chao You
Author:
Binyan He
Author:
K.A. Soady
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