Numerical Simulation of One Pulse Power Laser Shock Peening

Lei Chen

doi:10.4028/www.scientific.net/AMR.936.1653

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 936Numerical Simulation of One Pulse Power Laser...

Numerical Simulation of One Pulse Power Laser Shock Peening

Abstract:

Laser shock peening (LSP) is a novel technology of surface treatment. LSP utilizes a short laser pulse with high energy density, which induced a high pressure stress wave propagation and residual compressive stress on material surface. The effects of LSP of SAE9310 steel with a laser pulse of 14.2J at 2.9mm square beam have been studied by finite element method. The underlying formulation is based on Lagangian elastoplastic materials model. The propagation of shock wave, residual stress and plastic strain are simulated. The simulations show that the residual stress is mainly in the radial direction of the workpiece, and nearly zero in the longitudinal direction. The plastic strain remains on the processed surface dominantly. Divergences between theoretical and experimental residual stress occur due to the simplification of shock peening conditions.

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Periodical:

Advanced Materials Research (Volume 936)

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1653-1656

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.936.1653

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Online since:

June 2014

Authors:

Lei Chen*

Keywords:

Finite Element Method (FEM), Laser Shock Peening, Residual Stress, Shock Wave

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