Study of the Thermal Stresses and Residual Stresses due to Welding in Hull Constructruction -Thermal Stresses due to Welding-

선체건조(船體建造)에 있어서 용접공작(熔接工作)으로 인(因)한 열응력(熱應力) 및 잔류응력(殘留應力)에 대(對)한 고찰(考察) -용접작업(熔接作業)으로 인(因)한 열응력해석(熱應力解析)-

Analytical solutions for the transient temperature and quasi-static thermal stresses which arise in thin plates subjected to an instantaneous point source of heat have been investigated. And the solutions have been extended to the case of a moving source of heat with the aid of the Duhamel's superposition integral. For finite disk an experiment was conducted, the measured temperature histories show a good agreement with the theoretical temperature histories, And the histories of thermal stresses show a good qualitative agreement with the physical phenomena. And also we can find out that the maximum temperature and thermal stresses and their location can be estimated by using the solutions for infinite plates instead of the solutions for a finite plate. The solutions can be used for the problems such as a welding or line heating in a hull construction.