Study on Forming Characteristics of Metal Sheet by Laser Shock in Oblique Angle
Laser shock forming in oblique angle of metal sheet is involved due to the complexity of parts profile and multiple points forming by laser shock. The influence of incident laser angle and constraint pore diameter of the mold on the forming characteristics of metal sheet is investigated according to the experiment and finite element simulation. The results show there is a horizontal deviating deformation in the place of the maximum deformation in oblique shock, as the incident angle deviating vertical direction increases, the vertical displacement amount decreases nonlinearly and the horizontal deviating amount increases gradually; and the vertical displacement amount of sheet increases with the increase of the mold constraint pore diameter in a certain range, but decreases above this certain range. The metal sheet fractures when shock times increase, the extended crack is paralleled to roll direction of metal sheet in vertical angle shocking, but the extended cracks in oblique shocking, some is paralleled to roll direction of metal sheet, another is vertical to this direction. The forming characteristics of metal sheet under laser shocking in oblique angle is very important, which provides evidence for the large area precision forming and parameters optimization by laser shock forming.
Yingxue Yao, Dunwen Zuo and Xipeng Xu
Y. F. Jiang et al., "Study on Forming Characteristics of Metal Sheet by Laser Shock in Oblique Angle", Key Engineering Materials, Vols. 431-432, pp. 429-433, 2010