摘要 本文應用MARC有限元素軟體分析雷射加工板材成型問題。為暸解MARC應用於雷射成型問題的可靠性及妥適性，本文首先利用雷射加工板材成型的實驗比較模擬的準確性，並分別探討加工製程中雷射功率、雷射光徑、板材厚度及加熱時間對於成型角度的影響，進而探討雷射成型機制中溫度梯度機制(Temperature gradient mechanism)與挫屈機制(Buckling mechanism)之差異性，並提出對成型角度臨界值之預測方法。 Laser forming is an effective and efficient manufacturing technology.In the laser formong process,the bending angle is affected by the temperature distribution and gradient,the mechanical and thermal properties of the sheet metal material,and the process parameters. In this paper,we will use a 3D FEM simulation analysis of the bending angle for different laser powers,laser beam diameters,sheet thicknesses,and heating times.Furthermore,study the differentia between Temperature gradient mechanism and Buckling mechanism.
