Paper Details

In this project the effect of various parameters affecting the nugget formation in resistance spot welding isstudied. Thus here we consider the material CRCA steel of grade EDD with specimen of dimension 110*30 and twoupper and lower joining sheets having thickness 0.91mm and 1.22mm respectively and welding gun of integrated typewith welding electrode of copper chromium having dome shape tip. And changing the parameters welding current, weldtime and electrode force by keeping the other parameters constant for obtaining the optimum diameter of weldingnugget. In this project Taguchi method is considered as a design of experiment in Minitab 17 software to obtain theeffective parameters from the various parameters (here the Taguchi method of Minitab software reduces the 53 = 125parameters are reduced to 25 effective parameters) then experimental work are carried on that effective parametersonly. From that result one can predict the best combination of the parameters which can be validated with theexperimental work. Similar parameters and boundary conditions of the best combination are applied to the FEA model ofresistance spot welding and the analysis of that FEA model is carried out using the analysis APDL software. Then thenugget diameter obtained during the analysis of the FEA model of RSW is compared with the resulted nugget diameterobtained experimentally and with the predicted value of taguchi analysis.

Parmar Harsh G, Navnit J. Patel, “Study and Analysis of Various Parameters Affecting Nugget Formation in Resistance Spot Welding Using FEM”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 2, Issue 5, pp. 1136-1143, May 2015.