Eigenstrain modelling of residual stresses generated by arrays of LSP shots

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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. © 2011 Published by Elsevier Ltd.

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Achintha, M., & Nowell, D. (2011). Eigenstrain modelling of residual stresses generated by arrays of LSP shots. In Procedia Engineering (Vol. 10, pp. 1327–1332). Elsevier Ltd. https://doi.org/10.1016/j.proeng.2011.04.221

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