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《Optics and Precision Engineering》 2014-07
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Formability of laser shock-induced high speed flyers

ZHOU Jian-zhong;DAI Lei;HUANG Shu;MENG Xian-kai;WANG Xiao;LIU Hui-xia;School of Mechanical Engineering,Jiangsu University;  
The effect of relevant process parameters on forming properties of laser shock flyers was investigated.By using the Johnson-Cook model suitable for a high pressure and a high strain rate and ANSYS/LS-DYNA software,the laser shock induced bulge forming of flyers was simulated to obtain the relation between the laser energies,forming die diameters and forming die fillet rates and the heights of forming parts.The analysis results show that as the laser power density,forming die diameter and the die fillet rate increase,the heights of bulging parts are increased,and the maximum height of bulging parts is 310.6μm.Finally,an experiment of laser shock induced forming of flyers was carried out on a copper foil with a thickness of 50μm.The two-dimensional appearance and threedimensional microtopography of bulging parts were obtained with a stereomicroscope and a morphology measuring instrument.The results verify the reasonability of the numerical model.It concludes that the numerical simulation analysis method established in this paper can provide a means for the prediction and control of laser shock induced bulge forming processes of flyers.
【Fund】: 国家自然科学基金资助项目(No.51175235);; 江苏省自然科学基金资助项目(No.BK2012712);; 江苏大学大学生科研立项资助项目(No.12A387)
【CateGory Index】: TG665
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Chinese Journal Full-text Database 6 Hits
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