Numerical simulation of the stress peen forming process and experimental validation

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DOIResolve DOI: http://doi.org/10.1016/j.advengsoft.2011.05.025
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TypeArticle
Journal titleAdvances in Engineering Software
ISSN0965-9978
Volume42
Issue11
Pages963975; # of pages: 13
SubjectAeronautics industry; Arc height; Conventional peen forming; Curvature radii; Experimental validations; Finite Element; Forming process; Implicit and Explicit sequence solution; LS-DYNA; Numerical models; Numerical strategies; Paper supply; Pre-stressed; Residual stress profiles; Shot impacts; Stress peening; Fatigue of materials; Finite element method; Residual stresses; Shot peening; Computer simulation
AbstractStress peening forming is widely used in the aeronautics industry to induce curvatures in wing skins. Most of the investigations of stress peen forming are empirical and experimental. In this paper, a three step numerical model that can simulate this process was developed. First, an implicit Finite Element Analysis (FEA) with ANSYS where a prebending moment along the spanwise direction of the component was performed. Then, an explicit FEA with LS-DYNA simulating shot impacts on the pre-stressed component was executed in order to obtain the resulting stresses inside the component. Finally, an implicit FEA with ANSYS was performed for calculating the arc heights and the curvature radii of the component in chordwise and spanwise directions. Numerical analysis of the process shows that the prebending moments have an influence not only on the residual stress profiles but also on the curvatures of the deformed component in chordwise and spanwise directions. This model was used to establish a relationship between the prebending moment and the resulting arc heights and residual stress profiles. The numerical strategies developed in this paper supply a useful tool for studying and optimizing the stress peening process. © 2011 Elsevier Ltd. All rights reserved.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Aerospace (AERO-AERO)
Peer reviewedYes
NPARC number21271159
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Record identifier7ae97492-5c1a-46bb-add3-c60ad741425c
Record created2014-03-24
Record modified2016-05-09
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