EXPERIMENTAL RESEARCH AND NUMERICAL SIMULATION OF LASER SHOCK FORMING OF TA2 TITANIUM SHEET  

作　　者：F. Wang Z. Q. Yao J. Hu Q.L. Deng 

机构地区：[1]School of Mechanical Engineering, Shanghai Jiao Tong University,Shanghai 200030, China

出　　处：《Acta Metallurgica Sinica(English Letters)》2006年第5期347-354,共8页金属学报（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(No.50375096);the Science&Technology Department of Shanghai(No.04DZ11002 and No.05DZ22003).

摘　　要：Laser shock forming （ISF） was a new technique realized by applying an impulsive pressure generated by laser-induced shock wave on the surface of metal sheet. LSF of metal sheet was investigated with experiments and numerical simulation. The basic theories were introduced; the surface quality and deformation of the processed titanium sample （TA2） were examined; ABAQUS was used to simulate ISF and the central displacement of the shocked region was measured and compared with the simulation. Overlapped ISF treatment was experimentally carried out to produce groove and simulation. The results showed that the surface quality and the microstructure with single laser pulse had no remarkable change, and ablation was observed on the surface of the sample with overlapped pulses. The deformation observed in the numerical simulation agreeed with that observed in the experimental measurement quite well.Laser shock forming （ISF） was a new technique realized by applying an impulsive pressure generated by laser-induced shock wave on the surface of metal sheet. LSF of metal sheet was investigated with experiments and numerical simulation. The basic theories were introduced; the surface quality and deformation of the processed titanium sample （TA2） were examined; ABAQUS was used to simulate ISF and the central displacement of the shocked region was measured and compared with the simulation. Overlapped ISF treatment was experimentally carried out to produce groove and simulation. The results showed that the surface quality and the microstructure with single laser pulse had no remarkable change, and ablation was observed on the surface of the sample with overlapped pulses. The deformation observed in the numerical simulation agreeed with that observed in the experimental measurement quite well.

关 键 词：laser shock FORMING NUMERICAL simulation surface quality DEFORMATION 

分 类 号：TG665[金属学及工艺—金属切削加工及机床]