Abstract
Laser shock processing (LSP) is a mechanical surface treatment to induce a compressive residual stress state into the near surface region of a metallic component. The effect of the cyclic deformation properties of ductile materials on the final residual stress fields obtained by LSP is analysed. Conventional modelling approaches either use simple tensile yield criteria, or isotropic hardening models if cyclic straining response is considered for the material during the peen processing. In LSP, the material is likely to be subject to cyclic loading because of reverse yielding after the initial plastic deformation. The combination of experiment and modelling shows that the incorporation of experimentally-determined cyclic stress-strain data, including mechanical hysteresis, into material deformation models is required to correctly reflect the cyclic deformation processes during LSP treatment and obtain accurate predictions of the induced residual stresses.
| Original language | English |
|---|---|
| Pages (from-to) | 370-381 |
| Number of pages | 12 |
| Journal | International Journal of Mechanical Sciences |
| Volume | 156 |
| Early online date | 28 Mar 2019 |
| DOIs | |
| Publication status | Published - 1 Jun 2019 |
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Bibliographical note
NOTICE: this is the author’s version of a work that was accepted for publication in International Journal of Mechanical Sciences. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Mechanical Sciences, [156], (2019) DOI: 10.1016/j.ijmecsci.2019.03.029© 2019, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Keywords
- Cyclic hardening
- Finite element analysis
- Laser shock processing
- Residual stress
- Shock waves
ASJC Scopus subject areas
- Civil and Structural Engineering
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
Cite this
The effect of material cyclic deformation properties on residual stress generation by laser shock processing. / Angulo, I.; Cordovilla, F.; García-Beltrán, A.; Smyth, N. S.; Langer, K.; Fitzpatrick, M. E.; Ocaña, J. L.
In: International Journal of Mechanical Sciences, Vol. 156, 01.06.2019, p. 370-381.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The effect of material cyclic deformation properties on residual stress generation by laser shock processing
AU - Angulo, I.
AU - Cordovilla, F.
AU - García-Beltrán, A.
AU - Smyth, N. S.
AU - Langer, K.
AU - Fitzpatrick, M. E.
AU - Ocaña, J. L.
N1 - NOTICE: this is the author’s version of a work that was accepted for publication in International Journal of Mechanical Sciences. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Mechanical Sciences, [156], (2019) DOI: 10.1016/j.ijmecsci.2019.03.029 © 2019, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
PY - 2019/6/1
Y1 - 2019/6/1
N2 - Laser shock processing (LSP) is a mechanical surface treatment to induce a compressive residual stress state into the near surface region of a metallic component. The effect of the cyclic deformation properties of ductile materials on the final residual stress fields obtained by LSP is analysed. Conventional modelling approaches either use simple tensile yield criteria, or isotropic hardening models if cyclic straining response is considered for the material during the peen processing. In LSP, the material is likely to be subject to cyclic loading because of reverse yielding after the initial plastic deformation. The combination of experiment and modelling shows that the incorporation of experimentally-determined cyclic stress-strain data, including mechanical hysteresis, into material deformation models is required to correctly reflect the cyclic deformation processes during LSP treatment and obtain accurate predictions of the induced residual stresses.
AB - Laser shock processing (LSP) is a mechanical surface treatment to induce a compressive residual stress state into the near surface region of a metallic component. The effect of the cyclic deformation properties of ductile materials on the final residual stress fields obtained by LSP is analysed. Conventional modelling approaches either use simple tensile yield criteria, or isotropic hardening models if cyclic straining response is considered for the material during the peen processing. In LSP, the material is likely to be subject to cyclic loading because of reverse yielding after the initial plastic deformation. The combination of experiment and modelling shows that the incorporation of experimentally-determined cyclic stress-strain data, including mechanical hysteresis, into material deformation models is required to correctly reflect the cyclic deformation processes during LSP treatment and obtain accurate predictions of the induced residual stresses.
KW - Cyclic hardening
KW - Finite element analysis
KW - Laser shock processing
KW - Residual stress
KW - Shock waves
UR - http://www.scopus.com/inward/record.url?scp=85064092190&partnerID=8YFLogxK
U2 - 10.1016/j.ijmecsci.2019.03.029
DO - 10.1016/j.ijmecsci.2019.03.029
M3 - Article
VL - 156
SP - 370
EP - 381
JO - International Journal of Mechanical Sciences
JF - International Journal of Mechanical Sciences
SN - 0020-7403
ER -