Analysis of Residual Stresses on Tubular Welded Joints

• Published in: I-Manager's Journal on Mechanical Engineering Vol. 5; no. 3; pp. 6 - 17
• Main Authors: RamaKrishna, Ch.Siva, Raghuram, K.S., Kumar, R. Arvind
• Format: Journal Article
• Language: English
• Published: Nagercoil iManager Publications 15.07.2015
• Subjects: Mechanical engineering; Stress analysis; Welding
• ISSN: 2230-9055; 2249-0744
• DOI: 10.26634/jme.5.3.3441

Welding is used in fabrication as a permanent fastening method. Globally, welding technology has so many applications. This paper presents the residual stress distribution in angular joints of different included angles (45degree, 60degree, 75degree and 90degree). The Steel structures like off-shore structures, buried pipelines and steel trusses consist of a large number of tubular members joined by the welding process. Tubular members are joined in a variety of geometrical forms such as the angular joint, by welding. Tubular joints are structural discontinuities that can be easily involved with stress concentrations. However, the complicated residual stresses are unavoidably produced adjacent to the joints by welding. In this paper the residual stress distributions in welded tubular joints are analyzed by using a Steady-state Thermal Analysis. Characteristics of the residual stress distribution in welded tubular angle joints are investigated by the analysis of the result. The stresses and deformations are developed using ANSYS Workbench software. The theoretical inputs of heat flow and temperature are given to the analysis software ANSYS Workbench. The resultant stresses and total deformation are generated from analysis software. The obtained stresses for different included angles (45degree, 60degree, 75degree and 90degree) from the ANSYS Work Bench at same condition are compared with each other and best tubular joint is selected.