Experimental and Numerical Investigations of Residual Stress Distributions in the TIG Welding Process

R. Miresmaeili; Seiyed Ali Asghar Akbari Mousavi

doi:10.4028/www.scientific.net/MSF.580-582.331

Paper Titles

Effect of Joint Configuration Design on the Butt Welding Characteristics of Double Wall PE Pipes
p.315

Predictions of Current Attachment at Thermionic Cathode for TIG Arcs
p.319

Experimental Investigations of Explosive Welding of Three-Layer Cylinder Composites-Part 1
p.323

Numerical Studies of Explosive Welding of Three-Layer Cylinder Composites-Part 2
p.327

Experimental and Numerical Investigations of Residual Stress Distributions in the TIG Welding Process
p.331

Experimental and Numerical Studies of the Effects of Process Parameters in the Continuous Friction Welding Process
p.335

Cooperative Control of Robotic Welding System in One Side Backingless V Groove Welding
p.339

An Efficient Welding Method to Control the HAZ Softening of Ultra Fine Grained Steel Weldment
p.343

Selection of the GTAW-Flux Process Parameters on Type 310 Stainless Steel via a Taguchi-Neural Approach
p.347

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Experimental and Numerical Investigations of Residual Stress Distributions in the TIG Welding Process

Abstract:

Residual stresses are produced in weldments due to mismatching and non-uniform distributions of plastic and thermal strains. Attempts were made to analyze the residual stresses distributions produced in the TIG welding process using 2d and 3d finite element analyses. No attempts were made to find the optimum shape of grooves and gas flow rate to minimize the tensile residual stresses in the weldments, yet. In this paper, the effects of geometry configurations and inert gas flow rate on the residual stress distributions are presented using the thermo-elastoplastic constitutive equations and compared with the x-ray diffraction method. In this study, convection due to both air and inert gas flow rate along with conduction and radiation are considered.