Numerical Evaluation of Temperature Distribution and Stresses Developed in Resistance Spot Welding

Resistance spot welding is a type of electric resistance welding used to weld various sheet metal products through a process in which contacting metal surface points are joined by the heat obtained from resistance to electric current. The intense heat generated and rapid cooling of the joint produce residual stresses and distortion in the joint. The prediction of residual stresses before carrying actual welding is important for the prevention of these stresses. In this study thermo elasto plastic analyses are carried out to simulate resistance welding under various conditions. Mild steel sheets of equal and unequal thicknesses and aluminium sheets of equal and unequal thicknesses have been spot welded with the application of pressure which is determined by measuring force on the joint with a load cell. The size and shape of the nugget for different spot welding conditions is ascertained. The residual stresses under different spot welding conditions are compared. M. Lakshmi Sramika | I. Shanmukha | K. Kishore Chandra Mouli | K. Harish Kumar | M. Vamsi Kiran | N. V. S. J. K. Naidu "Numerical Evaluation of Temperature Distribution and Stresses Developed in Resistance Spot Welding" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-5 | Issue-5 , August 2021, URL: https://www.ijtsrd.com/papers/ijtsrd43855.pdf Paper URL: https://www.ijtsrd.com/engineering/mechanical-engineering/43855/numerical-evaluation-of-temperature-distribution-and-stresses-developed-in-resistance-spot-welding/m-lakshmi-sramika