RESIDUAL STRESS DISTRIBUTION OF 600MPa GRADE HIGH TENSILE STRENGTH STEEL PIPE USING WELDING FE SIMULATION

摘要

This paper aims to determine the residual stress distribution of 600MPa grade high tensile strength steel pipe (STKT590) by girth welding. Welding FE simulation is achieved considering temperature dependent physical constants and mechanical properties, obtained by the temperature elevated tensile tests. Comparative analyses clarify the characteristics of residual stress profile near weld joint of STKT590 pipe.