Laser Shock Forming of 2024-T351 Aluminum Alloy Sheets Supported by Rubber

2017 ◽  
Vol 54 (10) ◽  
pp. 101406
Author(s):  
李 民 Li Min ◽  
纪看看 Ji Kankan ◽  
刘 涛 Liu Tao ◽  
段士伟 Duan Shiwei ◽  
童靳于 Tong Jinyu ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Laser Shock ◽  
Laser Shock Forming

Numerical and experimental investigations of laser shock forming aluminum alloy sheet with mold

2016 ◽  
Vol 11 (1) ◽  
pp. 101-112 ◽  
Author(s):  
Xingquan Zhang ◽  
Yan Zhang ◽  
Yiwei Zhang ◽  
Shanbao Pei ◽  
Zhilai Huang ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Alloy Sheet ◽  
Experimental Investigations ◽  
Laser Shock ◽  
Aluminum Alloy Sheet ◽  
Laser Shock Forming

A study on failure mechanisms and formability of aluminum alloy sheets under laser shock forming

2018 ◽  
Vol 101 (1-4) ◽  
pp. 451-460 ◽  
Author(s):  
Yinfang Jiang ◽  
Deli Sha ◽  
Wenfan Jiang ◽  
Yuzhong He ◽  
Hua Jin
Keyword(s):  
Aluminum Alloy ◽  
Failure Mechanisms ◽  
Laser Shock ◽  
Laser Shock Forming

The Effect of Process Parameters on Strain Rates in Laser Shock Forming

2011 ◽  
Vol 464 ◽  
pp. 572-575
Author(s):  
Yin Fang Jiang ◽  
Zhen Zhou Tang ◽  
Lei Fang ◽  
Zhi Fei Li
Keyword(s):  
High Pressure ◽  
Aluminum Alloy ◽  
High Strain ◽  
Strain Ratio ◽  
Plastic Instability ◽  
Fe Analysis ◽  
Strain Rates ◽  
Laser Shock ◽  
Instability Theory ◽  
Laser Shock Forming

Laser shock forming (LSF) is characterized in non-contact load, high pressure and high strain ratio. It has many promising applications in aerospace, automotive, metal and many other industries. However, despite the extensive experimental and modeling study in literature, seldom investigations are about the effect of laser parameters on strain rates. With the variation of strain rates in LSF, the failure mechanism and plastic instability theory are different. Therefore, the variation of strain rates should be considered in the process of establishing LSF theory. Based on this, the article discussed the effect of laser shock parameters on the strain rates. Taken the 3003-H16 aluminum alloy as the specimen, the finite element (FE) analysis for LSF was performed.

Effects of Sheet Thickness on Residual Stress Distribution by Laser Shock Processing of 7050-T7451 Aluminum Alloy

2011 ◽  
Vol 189-193 ◽  
pp. 3778-3781
Author(s):  
Yin Fang Jiang ◽  
Lei Fang ◽  
Zhi Fei Li ◽  
Zhen Zhou Tang
Keyword(s):  
Finite Element ◽  
Aluminum Alloy ◽  
Stress Distribution ◽  
Residual Stresses ◽  
Sheet Thickness ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Element Analysis ◽  
Finite Element Software ◽  
Shock Processing

Laser shock processing is a technique similar to shot peening that imparts compressive residual stresses in materials for improved fatigue resistance. Finite element analysis techniques have been applied to predict the residual stresses from Laser shock processing. The purpose of this paper is to investigate of the different sheet thickness interactions on the stress distribution during the laser shock processing of 7050-T7451 aluminum alloy by using the finite element software. The results indicate that the sheet thickness has little effects on the compression stress in the depth of sheet, but great impacts on the reserve side.

Micro-Structural Enhancement Mechanism of LY2 Aluminum Alloy by Means of a Single Laser Shock Processing

2010 ◽  
Vol 37 (10) ◽  
pp. 2662-2666 ◽  
Author(s):  
鲁金忠 Lu Jinzhong ◽  
罗开玉 Luo Kaiyu ◽  
冯爱新 Feng Aixin ◽  
钟俊伟 Zhong Junwei ◽  
孙桂芳 Sun Guifang ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Enhancement Mechanism ◽  
Single Laser ◽  
Shock Processing

WC Nano-Particle Implanting Strengthening on Aluminum Alloy Surface Via Laser Shock Peening

2011 ◽  
Vol 38 (12) ◽  
pp. 1203006
Author(s):  
吕亮 Lü Liang ◽  
黄婷 Huang Ting ◽  
钟敏霖 Zhong Minlin
Keyword(s):  
Aluminum Alloy ◽  
Laser Shock Peening ◽  
Alloy Surface ◽  
Nano Particle ◽  
Laser Shock ◽  
Shock Peening ◽  
Aluminum Alloy Surface

Experimental Study of Residual Stress Formation Mechanism of 7050 Aluminum Alloy Sheet by Laser Shock Processing

2016 ◽  
Vol 43 (7) ◽  
pp. 0702008
Author(s):  
曹宇鹏 Cao Yupeng ◽  
徐影 Xu Ying ◽  
冯爱新 Feng Aixin ◽  
花国然 Hua Guoran ◽  
周东呈 Zhou Dongcheng ◽  
...  
Keyword(s):  
Residual Stress ◽  
Experimental Study ◽  
Aluminum Alloy ◽  
Alloy Sheet ◽  
Laser Shock ◽  
Aluminum Alloy Sheet ◽  
Laser Shock Processing ◽  
7050 Aluminum Alloy ◽  
Stress Formation ◽  
Shock Processing

Theoretical Analysis of Laser Shock Bulging Forming

2012 ◽  
Vol 472-475 ◽  
pp. 2480-2483 ◽  
Author(s):  
Guo Fang Zhang ◽  
Zhong Ji ◽  
Jing Liu ◽  
Chao Zheng ◽  
Jian Hua Zhang
Keyword(s):  
High Pressure ◽  
Theoretical Analysis ◽  
Analytical Model ◽  
Pulse Energy ◽  
Shock Pressure ◽  
Laser Shock ◽  
Plastic Response ◽  
Forming Process ◽  
Laser Shock Forming ◽  
Plastic Forming

Laser shock forming (LSF) is a novel plastic forming process which utilizes high-pressure plasma to deform thin metals to 3D configurations. The plastic response of a circular plate in laser shock bulging forming was theoretically studied. A simplified shock pressure model was established and then an analytical model was proposed to calculate the deflection. The results show that the deflection increases with increasing pulse energy and the deformation profiles calculated by the analytical model agree well with those of experiment.

Research on the Finite Element Simulation of the Laser Shock Forming of TC4 Titanium Alloy

2016 ◽  
Vol 693 ◽  
pp. 1121-1128 ◽  
Author(s):  
Guo He Li ◽  
David Mbukwa ◽  
Wei Zhao
Keyword(s):  
Finite Element ◽  
Sheet Metal ◽  
Laser Energy ◽  
Sheet Thickness ◽  
High Amplitude ◽  
Laser Spot ◽  
Laser Shock ◽  
Forming Process ◽  
Element Analysis ◽  
Laser Shock Forming

laser shock forming, which combines the metal forming and material modification, is a non-mode, flexible forming new technology using laser-induced force effect of high amplitude shock waves to obtain the plastic deformation of sheet metal. in this paper, the simulation of laser shock forming process of tc4 sheet metal was carried out through the commercial finite element analysis software abaqus. the influence of the sheet thickness, laser energy, constraints aperture and laser spot spacing on the sheet metal deformation are investigated. the results show that: with the increase of sheet thickness, the deformation range of sheet decreases, and the amplitude of deformation decreases firstly and then increases. the deformation increases linearly with the increase of laser energy. the larger boundary constraint aperture leads to the larger deformation of sheet metal. there are no obvious influence on the forming accuracy when an opposite laser spot spacing is adopted. therefore, under the condition of meeting the accuracy requirement, for improving the efficiency, adopting a certain laser spot spacing to finish the forming should be considered.

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