%0Computer Program %TProcess Simulation of Gas Metal Arc Welding Software %XARCWELDER is a Windows-based application that simulates gas metal arc welding (GMAW) of steel and aluminum. The software simulates the welding process in an accurate and efficient manner, provides menu items for process parameter selection, and includes a graphical user interface with the option to animate the process. The user enters the base and electrode material, open circuit voltage, wire diameter, wire feed speed, welding speed, and standoff distance. The program computes the size and shape of a square-groove or V-groove weld in the flat position. The program also computes the current, arc voltage, arc length, electrode extension, transfer of droplets, heat input, filler metal deposition, base metal dilution, and centerline cooling rate, in English or SI units. The simulation may be used to select welding parameters that lead to desired operation conditions. %AMurray, Paul %Rhttps://doi.org/10.11578/dc.20180718.28 %Uhttps://www.osti.gov/doecode/biblio/14837 %CUnited States %D2005 %GEnglish %2USDOE %1AC07-05ID14517 2005-09-06