A Basic Numerical Peening Indentation Model with Geometric Indenter Based on Dynamic Impact Analysis

Taeh Yung Kim; Nam Ju Lee

doi:10.4028/www.scientific.net/KEM.789.76

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 789A Basic Numerical Peening Indentation Model with...

A Basic Numerical Peening Indentation Model with Geometric Indenter Based on Dynamic Impact Analysis

Abstract:

As shot peening is widely used to improve the crack resistance of various metals, it isimportant to have an accurate method to calculate the compressive residual stress produced by thisprocess. To this end, this paper presents a finite element (FE) model that includes an indenterdesigned from a dent profile. The results of compressive residual stress obtained by using thisindenter model and a normal shot impact model are compared. The indentation FE solution with anunmodified indenter is close to that obtained using the rigid shot (RS) impact model. The solutionfor the indentation FE model with a modified indenter closely matches that for an elasticdeformable shot (EDS) impact model. These results confirm the effectiveness of the indentation FEmodel based on the dent profile. This model can replace the present impact FE models to calculatethe compressive residual stress produced by shot peening.

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Periodical:

Key Engineering Materials (Volume 789)

Pages:

76-81

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.789.76

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Online since:

November 2018

Authors:

Taeh Yung Kim*, Nam Ju Lee

Keywords:

Elastic Deformable Shot, Finite Element Analysis, Indentation, Residual Stress, Rigid Shot, Shot Peening, Single Shot Impact

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* - Corresponding Author

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