アーク溶接における冷却過程の解析

概要

論文の詳細を見る
In general, the strength of weld joint depends on the thermal cycle of bond. Consequently, it is very important to evaluate the cooling process of bond accurately. In the paper, the cooling process is analysed by means of 3-dimensional F.D.M., where the calculation is executed with a mini-computer (main memory; 128KB) . The simultaneous equations are sloved by Gauss-Seidel method with δ<SUP>2</SUP>-extrapolation technique, so the maximum node number of F.D.M. model becomes over 10000. The governing equation here is a quasi-stationary one because heat input by arc is treated as moving heat source. The analyses are done for various welding speeds and plate thicknesses and their effects are discussed. The accuracy of the analytical results is ascertained by the experiment of CO<SUB>2</SUB> arc welding.
社団法人日本マリンエンジニアリング学会の論文