Numerical analysis of post welding heat treatment base on the thermal creep elastic-plastic theory

J. Ocean Eng. Technol. 1997;11(1):113-123.

점열탄소성 이론에 의한 용접후열처리에 대한 수치해석

방한서,차용훈,오율권,노찬승,김종명

조선대학교 공과대학,조선대학교 공과대학,조선대학교 공과대학,조선대학교 공과대학,조선대학교 공과대학

Keywords: Welding Residual Stress, Stress Corrosion, Welded Joint, Relaxation of Residual Stress, Thermal-Elasto-Plastic Creep, Post Welding Heat Treatment

핵심용어: 용접잔류응력, 응력부식, 용접이음부, 용접잔류응력의 완화, 점열탄소성, 용접후열처리

Abstract

The welding residual stresses produced by welding frequently cause a crack and promote stress corrosion etc. in heat affected zone contained with external load and weakness of material. For the purpose pof relaxation of welding residual stress, post welding heat teratment(PWHT) is widely used. In this paper, the computer program which is based on Thermal-Elasto-plastic-creep theory for plane deformation on developed by finite element method (F.E.M) and verified its propriety by experimental measurement and also by using the developed computer program. The mechanical behavior of butt welding joint is clairfied during PWHT.