Finite Element Analysis of Heat Input Effect on Temperature, Residual Stresses and Distortion in Butt Welded Plates. (2018)

• Record Type: Journal Article
• Authors: Venkatkumar, D.; Ravindran, D.; Selvakumar, G.
• Is Part Of: Materials today. Volume 5:Number 2(2018)Part 2
• Page Start: 8328
• Page End: 8337
• Publication Date: 2018
• Subjects: Type your keywords here -- separated by semicolons; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2017.11.525
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: The present study focused on welding heat input effect on temperature and residual stresses induced by single pass V-butt joint gas tungsten arc welding (GTAW) is carried out numerically. The 3D Finite Element (FE) numerical technique is used to analyze the thermo-mechanical behavior of 304 Stainless Steel butt welded joint. The thermo-elastic-plastic large displacement theory is adopted for numerical simulations of residual stresses. The consecutively coupled thermo-mechanical analysis is carried out for the prediction of thermal histories and residual stresses. The moving heat source is used to simulate the welding process. The welding heat input is modeled by double ellipsoidal volumetric heat source. The filler material addition during the butt joint welding is modeled by element birth and technique. The temperature dependent physical and mechanical properties are employed in FE model. The convection and radiation heat transfer losses are taken into account for this analysis. Effects of five different welding heat input on the weld bead geometry and residual stresses are studied. The simulated results shows that the welding input is strongly influence the evaluation of weld bead and residual stresses.