レーザフォーミングのシミュレーション

－第2報，板材内部に生じるひずみの検討－

抄録

In the laser forming of a metal plate, the bending process is caused by the thermal stresses which are produced in the plate by the laser irradiation. In the present study, the finite element method (FEM: LS-DYNA) is used to analyze the laser forming, in which the laser beam is modeled by the Gaussian distribution, then the bending deformation of the plate is estimated by the FEM. Comparing with the experimental result, the validity of the proposed analytical model of the laser forming is evaluated. In the numerical example, the distribution of the strain in the metal plate is clarified in the laser forming.