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Experiment and numerical simulation of micro dent fabricated by laser shocking 2024 aluminum alloy

Yezhong Fang (School of Mechanical Engineering, Anhui University of Technology, Ma’anshan, China)
Xiaotian Ji (School of Mechanical Engineering, Anhui University of Technology, Ma’anshan, China)
Xingquan Zhang (School of Mechanical Engineering, Anhui University of Technology, Ma’anshan, China)
Jun Wang (School of Mechanical Engineering, Anhui University of Technology, Ma’anshan, China)
Bin Chen (School of Mechanical Engineering, Anhui University of Technology, Ma’anshan, China)
Shiwei Duan (School of Mechanical Engineering, Anhui University of Technology, Ma’anshan, China)
Jinyu Tong (School of Mechanical Engineering, Anhui University of Technology, Ma’anshan, China)
Guangwu Fang (School of Mechanical Engineering, Anhui University of Technology, Ma’anshan, China)
Shanbao Pei (School of Mechanical Engineering, Anhui University of Technology, Ma’anshan, China)

Multidiscipline Modeling in Materials and Structures

ISSN: 1573-6105

Article publication date: 24 September 2019

Issue publication date: 15 January 2020

147

Abstract

Purpose

The purpose of this paper is to investigate the dynamic forming process of the micro dent fabricated by laser shock processing on 2024-T3 aluminum alloy. The effect of laser pluse energy on the deformation of micro dent was also discussed in detail.

Design/methodology/approach

It uses finite element analysis method and the corresponding laser shocking experiment.

Findings

The results demonstrate that the dynamic formation process of micro dent lasts longer in comparison with the shock wave loading time, and the depths of micro dents increase with the increasing laser energy. In addition, laser shocking with higher energy can result in more obvious pileup occurred at the outer edge of micro dent.

Originality/value

Surface micro dents can serve as fluid reservoirs and traps of the wear debris, which can decrease the effects of the wear and friction in rolling and sliding interfaces. The investigations can not only be propitious to comprehensively understand the forming mechanism of laser-shocked dent, but also be beneficial to get sight into the residual stress field induced by laser shocking.

Keywords

Acknowledgements

The work was supported by the National Natural Science Foundation of China (No. 51675002), the National Natural Science Foundation of Anhui province (No. 1708085ME110), Natural Science Research Projects of Anhui Universities (No. KJ2019A0084) and Key Research and Development Plan of Anhui Province (No. 201904a05020065) and laser-shock experiment was provided by Xi’an Tyrida Optical Electric Technology Co. Ltd. The authors declare that there are no conflicts of interest.

Citation

Fang, Y., Ji, X., Zhang, X., Wang, J., Chen, B., Duan, S., Tong, J., Fang, G. and Pei, S. (2020), "Experiment and numerical simulation of micro dent fabricated by laser shocking 2024 aluminum alloy", Multidiscipline Modeling in Materials and Structures, Vol. 16 No. 1, pp. 156-168. https://doi.org/10.1108/MMMS-04-2019-0076

Publisher

:

Emerald Publishing Limited

Copyright © 2019, Emerald Publishing Limited

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