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Metals 2017, 7(3), 93; doi:10.3390/met7030093

Experimental and Numerical Simulation Investigation on Laser Flexible Shock Micro-Bulging

1
School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
2
Department of Mechanical Engineering, Northern Illinois University, DeKalb, IL 60115, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Hugo F. Lopez
Received: 13 February 2017 / Revised: 6 March 2017 / Accepted: 10 March 2017 / Published: 12 March 2017

Abstract

Laser flexible shock micro-bulging (LFSB) is a novel micro fabrication technology, which combines laser dynamic forming and flexible die forming, which is a type of high strain rate micro-forming. The LFSB of 304 stainless steel foils was investigated in this paper. Experimental and simulated results indicated that the bulging depth and thickness thinning rate of bulging parts increased with an increase of laser energy and a decrease of workpiece thickness. Experimental results also showed the surface morphology of bulging parts. The hardness distribution in the cross section of bulging parts was revealed by nanoindentation experiments. The internal microstructure of micro bulging parts was observed by TEM. In addition, the equivalent stress and plastic strain distribution of bulging parts were shown in the numerical simulation under different workpiece thicknesses and laser energies. View Full-Text
Keywords: laser flexible shock; micro-bulging; numerical simulation laser flexible shock; micro-bulging; numerical simulation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Liu, H.; Sun, X.; Shen, Z.; Li, L.; Sha, C.; Ma, Y.; Gau, J.-T.; Wang, X. Experimental and Numerical Simulation Investigation on Laser Flexible Shock Micro-Bulging. Metals 2017, 7, 93.

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