발간논문

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Vol.26, No.8, 810 ~ 822, 1988
Title
Computer Simulation of heat Flow in Thin Sheet Welding
홍준표Chun Pyo Hong, 백운형Woon Hyung Baek
Abstract
A two dimensional mathematical model was developed to analyze the heat flow involving phase change during welding of thin plates. A modified finite difference method was adopted for computer simulation. Latent heat of fusion or freezing during welding was treated by the temperature recovery method. Radiative and convective heat losses from the surface and the dependence of the relevant physical properties on temperature were also taken into account. The effects of welding speed, heat input, preheating temperature, and plate thickness on the thermal history and isotherms of the welding zone were quantitatively demonstrated by computer simulation based on 7020 aluminum alloy and l.5% Mn steel.
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