Finite element based parametric study on the characterization of weld process moving heat source parameters in austenitic stainless steel. (November 2017)

• Record Type: Journal Article
• Authors: Velaga, Satish K.; Ravisankar, A.
• Is Part Of: International journal of pressure vessels and piping. Volume 157(2017)
• Page Start: 63
• Page End: 73
• Publication Date: 2017-11
• Subjects: Finite element simulation -- Moving heat source -- Weld pool size -- Thermal cycles -- Residual stress distributions; Pressure vessels -- Periodicals; Pipe -- Periodicals; Récipients sous pression -- Périodiques; Tuyaux -- Périodiques; Pipe; Pressure vessels; Periodicals; 681.76041
• DOI: 10.1016/j.ijpvp.2017.09.001
• Languages: English
• ISSNs: 0308-0161

Abstract

Abstract: In this paper, significant aspects of weld process double ellipsoidal moving heat source geometric parameters are investigated. A three-dimensional finite element analysis is performed for AISI 304 stainless steel thin cylindrical components. During simulations, a sequentially coupled thermo-metallurgical-mechanical analysis is employed for sixteen different geometrical conditions of heat source model. The results reveal that there is a marginal affect on weld pool size and shapes, temperature distributions with the variation in moving heat source geometric parameters; whereas no influence on the residual stress distributions. Moreover, the validity of the numerical simulation results is validated through full-scale shop floor welding experiments. Highlights: Characterization of GTAW process moving heat source geometric parameters. Three-dimensional sequentially coupled thermo-metallurgical-mechanical analysis. Weld pool size and shapes, temperature and residual stresses for AISI 304 SS. Validation of numerical simulation results with the experimental measurements.