抄録
This paper describes the methods for distributing the residual bending moment efficiently in a thin metal plate in order to generate a plastic deformation along the irradiation point when acting the bending moment again. The thermo-elasto-plastic deformational behavior of a thin metal plate when laser beam is irradiated to the surface of a plate with cooling its back side is investigated based on the limit analysis. In our previous study, the distributions of residual moment have been examined under the multipoint irradiation. However, it became clear that the residual moment cannot be distributed effectively in a plate by conducting the multipoint irradiation only once. Then, in this paper, the distribution of residual moment obtained under the overlapping irradiation is taken up as the next subject of this research. Especially, the methods for distributing the residual moment widely are examined by changing the conditions such as the positions of irradiation and the surface temperature.
