Thermo-elasto-plastic Analysis for a Thin Plate subjected to Laser Irradiation : Spread of plastic region in the irradiated position after re-yielding
Details
In case of the second irradiation, which is performed at the adjacent position of the first single irradiation, the distribution of internal force (membrane force and bending moment) becomes very complicated, because the residual stress occurs in the neighborhood of the first irradiated position. Hence, the condition for re-yielding on the second irradiation depends on the position of re-irradiation, temperature condition, etc. In this paper, we investigate the distribution of membrane force and bending moment in the arbitrary radial direction and made clear the time that the plastic region spread in the irradiated area. Moreover, the relations between re-irradiated position and temperature-difference when the irradiated area becomes whole plastic are revealed.
