An eigenstrain-based finite element model and the evolution of shot peening residual stresses during fatigue of GW103 magnesium alloy

X. Song; W. C. Liu; J. P. Belnoue; J. Dong; G. H. Wu; W. J. Ding; S. A.J. Kimber; T. Buslaps; A. J.G. Lunt; A. M. Korsunsky

doi:10.1016/j.ijfatigue.2012.01.019

An eigenstrain-based finite element model and the evolution of shot peening residual stresses during fatigue of GW103 magnesium alloy

X. Song, W. C. Liu, J. P. Belnoue, J. Dong, G. H. Wu, W. J. Ding, S. A.J. Kimber, T. Buslaps, A. J.G. Lunt, A. M. Korsunsky

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

46 Citations (SciVal)

Abstract

Magnesium alloy GW103 samples were heat treated to different ageing conditions and then shot peened using process parameters that deliver optimized high cycle fatigue (HCF) life. Significant HCF life improvements were observed in all samples, with a peak-aged sample showing the biggest increase. In order to simulate the effect and evolution of residual stresses during low cycle fatigue (LCF), a Finite Element (FE) model was employed, taking into account both the shot-peening-induced plastic strains and the influence of hardening on subsequent deformation. Experimental and modelling results offer a basis for explaining the observed fatigue performance improvement due to shot peening.

Original language	English
Pages (from-to)	284-295
Number of pages	12
Journal	International Journal of Fatigue
Volume	42
DOIs	https://doi.org/10.1016/j.ijfatigue.2012.01.019
Publication status	Published - 1 Sept 2012

Keywords

Ageing
Eigenstrain
Magnesium alloy
Residual stress
Shot peening

ASJC Scopus subject areas

Modelling and Simulation
General Materials Science
Mechanics of Materials
Mechanical Engineering
Industrial and Manufacturing Engineering

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10.1016/j.ijfatigue.2012.01.019

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Song, X., Liu, W. C., Belnoue, J. P., Dong, J., Wu, G. H., Ding, W. J., Kimber, S. A. J., Buslaps, T., Lunt, A. J. G., & Korsunsky, A. M. (2012). An eigenstrain-based finite element model and the evolution of shot peening residual stresses during fatigue of GW103 magnesium alloy. International Journal of Fatigue, 42, 284-295. https://doi.org/10.1016/j.ijfatigue.2012.01.019

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abstract = "Magnesium alloy GW103 samples were heat treated to different ageing conditions and then shot peened using process parameters that deliver optimized high cycle fatigue (HCF) life. Significant HCF life improvements were observed in all samples, with a peak-aged sample showing the biggest increase. In order to simulate the effect and evolution of residual stresses during low cycle fatigue (LCF), a Finite Element (FE) model was employed, taking into account both the shot-peening-induced plastic strains and the influence of hardening on subsequent deformation. Experimental and modelling results offer a basis for explaining the observed fatigue performance improvement due to shot peening.",

keywords = "Ageing, Eigenstrain, Magnesium alloy, Residual stress, Shot peening",

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AU - Song, X.

AU - Liu, W. C.

AU - Belnoue, J. P.

AU - Dong, J.

AU - Wu, G. H.

AU - Ding, W. J.

AU - Kimber, S. A.J.

AU - Buslaps, T.

AU - Lunt, A. J.G.

AU - Korsunsky, A. M.

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AB - Magnesium alloy GW103 samples were heat treated to different ageing conditions and then shot peened using process parameters that deliver optimized high cycle fatigue (HCF) life. Significant HCF life improvements were observed in all samples, with a peak-aged sample showing the biggest increase. In order to simulate the effect and evolution of residual stresses during low cycle fatigue (LCF), a Finite Element (FE) model was employed, taking into account both the shot-peening-induced plastic strains and the influence of hardening on subsequent deformation. Experimental and modelling results offer a basis for explaining the observed fatigue performance improvement due to shot peening.

KW - Ageing

KW - Eigenstrain

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KW - Residual stress

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ER -

An eigenstrain-based finite element model and the evolution of shot peening residual stresses during fatigue of GW103 magnesium alloy

Abstract

Keywords

ASJC Scopus subject areas

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