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A numerical study of the residual stress pattern from single shot impacting on a metallic component

Lookup NU author(s): Professor Brian Shaw

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Abstract

Shot peening is a process in which a stream of shot is blasted against an engineering component to generate a high compressive residual stress regime at the surface of the component. This paper describes a 3D finite element dynamic analysis of single shot impacting on a metallic component. The model is first validated against a published numerical study. A parametric study is conducted to investigate the effect of shot diameter, impact velocity, incident angle and component material properties on the resulting residual stress profile. Several meaningful conclusions can be drawn regarding the effect of shot diameter, impact velocity, incident angle and initial yield stress. The effect of strain-hardening parameter is more complex as it depends on the relative magnitude of the strain-hardening yield stress to the initial yield stress and the impact energy. © 2007 Elsevier Ltd. All rights reserved.

Publication metadata

Author(s): Hong T, Ooi JY, Shaw BA

Publication type: Article

Publication status: Published

Journal: Advances in Engineering Software

Year: 2008

Volume: 39

Issue: 9

Pages: 743-756

ISSN (print): 0965-9978

ISSN (electronic): 1873-5339

Publisher: Pergamon

URL: http://dx.doi.org/10.1016/j.advengsoft.2007.10.002

DOI: 10.1016/j.advengsoft.2007.10.002

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