Numerical simulation of the shot peening process under previous loading conditions

7th International Congress of Engineering Physics

物理学;工业技术

Romero-Ángeles, B.^1 ; Urriolagoitia-Sosa, G.^2 ; Torres-San Miguel, C.R.^2 ; Molina-Ballinas, A.^2 ; Benítez-García, H.A.^2 ; Vargas-Bustos, J.A.^2 ; Urriolagoitia-Calderón, G.^2

Instituto Politécnico Nacional, Escuela Superior de Ingeniería Mecánica y Eléctrica., Unidad Profesional Azcapotzalco, Av. de las Granjas 682, Del. Azcapotzalco , México D.F.

02250, Mexico^1

Instituto Politécnico Nacional, Escuela Superior de Ingeniería Mecánica y Electrica, Unidad Profesional Adolfo López Mateos, Zacatenco, Edificio 5, 2do. piso, México D. F.

C.P. 07738, Mexico^2

关键词: Beneficial aspects;    Beneficial effects;    Loading condition;    Manufacturing process;    Mechanical behavior;    Mechanical components;    Mechanical elements;    Residual stress fields;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/582/1/012004/pdf
DOI  :  10.1088/1742-6596/582/1/012004

学科分类：工业工程学

来源: IOP

【 摘 要 】

This research presents a numerical simulation of the shot peening process and determines the residual stress field induced into a component with a previous loading history. The importance of this analysis is based on the fact that mechanical elements under shot peening are also subjected to manufacturing processes, which convert raw material into finished product. However, material is not provided in a virgin state, it has a previous loading history caused by the manner it is fabricated. This condition could alter some beneficial aspects of the residual stress induced by shot peening and could accelerate the crack nucleation and propagation progression. Studies were performed in beams subjected to strain hardening in tension (5y) before shot peening was applied. Latter results were then compared in a numerical assessment of an induced residual stress field by shot peening carried out in a component (beam) without any previous loading history. In this paper, it is clearly shown the detrimental or beneficial effect that previous loading history can bring to the mechanical component and how it can be controlled to improve the mechanical behavior of the material.