Residual stress induced convex bending in laser peen formed aluminum alloy

被引：19
|
作者：
Zhou, W. F. [1 ,2 ]
Ren, X. D. [1 ]
Wang, C. C. [1 ]
Yang, X. Q. [1 ]
Larson, Enoch Asuako [1 ]
机构：
[1] Jiangsu Univ, Sch Mech Engn, Zhenjiang 212013, Peoples R China
[2] Swinburne Univ Technol, Fac Sci Engn & Technol, Hawthorn, Vic 3122, Australia
来源：
JOURNAL OF LASER APPLICATIONS | 2018年 / 30卷 / 01期
基金：
中国国家自然科学基金;
关键词：
laser shock forming; residual stress; aluminum alloy; plastic deformation;
D O I：
10.2351/1.5012962
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Laser peen forming is a purely mechanical forming method developed to accurately bend, shape, precision align, or repair components using nanosecond-pulsed laser induced shock waves. This paper aims to clarify the residual stress induced bending process in laser peen formed aluminum alloy plates. Finite element simulations were performed to investigate the bending angle and residual stress redistribution before and after bending. A reasonable agreement between simulation and experiment results was achieved. The results showed that larger bending angle was obtained by increasing the number of laser impacts and laser peened area. Besides, the bending angle in 3mm plates was larger than that in 2mm plates under the same processing condition. The laser peening induced bending angle is controlled by a residual stress gradient in the thickness direction. (C) 2017 Laser Institute of America.
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页数：8
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