Laser forming of the panel with crossed reinforcing bars

Laser forming technology is widely applied in the forming of plates with advantages of high efficiency, die-less, and absence of tools et al. In the forming process of the panel with crossed reinforcing bars (PWCRB) with the integral continuous scanning strategy (ICSS), the twisting phenomenon occurred. This was induced by the buckling of the middle stiffener. The deformation behavior of the panel when formed with the ICSS was studied through numerical simulations. The results showed that the stress and strain were inconsistent along the scanning line which was induced by the inconsistency of the thickness along the scanning line. As a result of that, a consistency-deformation scanning strategy (CDSS) was proposed and its influence on the forming of the panel was studied in simulations. The results showed that the stress and the strain tended to be consistent, and the residual stress of the middle stiffener decreased so as to avoid the buckling of the middle stiffener as well as the twisting phenomenon of the panel. Both the experimental results and the numerical results showed that the PWCRB could be formed with the strategy efficiently.