Numerical analysis of the residual stress in ultrasonic impact treatment process with single-impact and two-impact models

•Two 3D models of the UIT process with single and two pins are developed.•Single pin and two pins impact on the aluminum materials are analyzed.•Based on the transformation of energy, the stress and strain fields are obtained.•The residual stress distributions with different impact intensities are a...

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Bibliographic Details
Published in:Applied surface science 2015-08, Vol.347, p.596-601
Main Authors: Guo, Chaobo, Wang, Zhijiang, Wang, Dongpo, Hu, Shengsun
Format: Article
Language:English
Subjects:
Aluminum base alloys
Contact stresses
Controlled parameters
Finite element analysis
Impact analysis
Mathematical models
Plastic deformation
Residual stress
Stress concentration
Transformations
UIT
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Summary:•Two 3D models of the UIT process with single and two pins are developed.•Single pin and two pins impact on the aluminum materials are analyzed.•Based on the transformation of energy, the stress and strain fields are obtained.•The residual stress distributions with different impact intensities are analyzed.•Two-pin impact model is developed to analyze the effect of the surface coverage. Two 3D finite element models of the Ultrasonic Impact Treatment (UIT) process, a single-impact model and a two-impact model, are presented to simulate pin impact on 2024 aluminum alloy. In the single-impact model, the transformation of the energy and transmission of the stress waves are used to analyze the distributions of the stress field and equivalent plastic strain field during the contact and rebound processes. Further, the effects of the initial impact velocity, pin size, and shape on the residual stress distributions are investigated. In the two-impact model, the two-impact process with different distances is investigated to analyze the effects of the second impact on the residual stress field induced by the first impact.
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2015.04.128