Modelling of weld metal and heat-affected zone
Material properties of steel change with welding. Welding alters the ductility and strength of the material around the weld. Experimental and numerical studies to characterize the variation of the material properties across regions from the heat-affected zone to the weld metal of ASTM A572 grade 50 steel plates were carried out. Three plate thicknesses of 15.9 mm, 19.1 mm and 25.4 mm were investigated in these studies. Plates of equal thickness were butt welded together. Tension coupons from regions around the butt weld from the base metal to the weld metal were machined and tested. Based on the test results, guidelines are formulated to define the true stress versus true strain relationship to be used in modelling the weld metal and the heat-affected zone in a finite element analysis for a welded ASTM A572 Gr. 50 plate. These true stress versus true strain relationships are generated through a simple function.
|Conference||Annual Conference of the Canadian Society for Civil Engineering 2007: Where the Road Ends, Ingenuity Begins|
Naqvi, Z., & Khoo, H. A. (2007). Modelling of weld metal and heat-affected zone. Presented at the Annual Conference of the Canadian Society for Civil Engineering 2007: Where the Road Ends, Ingenuity Begins.