Analysis of the Reverse Plugging of A Thin Plate Irradiated by Long Pulsed Laser

Based on the Principle of Maximum Shearing-Stress, a theoretical model is developed for the reverse-plugging of a thin plate under irradiation of long pulsed laser. The formula of the laser density threshold for the reverse-plugging is deduced. As an example, the reverse-plugging of a Cu thin plate irradiated by ms-degree long pulsed laser is calculated both analytically and numerically, and the laser density threshold and the temperature data are obtained. The analytical, numerical and experimental results are in good agreement with one another.