Analysis of Residual Stresses on Tubular Welded Joints

Ch.Siva RamaKrishna*, K.S.Raghuram**, R. Arvind Kumar***
* Associate Professor, Department of Mechanical Engineering, Vignan's Institute of Information Technology, Visakhapatnam, A. P., India.
** Lecturer, Engineering Courses, Government Junior College and Engineering Colleges.
*** Student, Department of Mechanical Engineering, Vignan's Institute of Information Technology, Visakhapatnam, Andhra Pradesh, India.
Periodicity:May - July'2015
DOI : https://doi.org/10.26634/jme.5.3.3441

Abstract

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 (45o, 60o, 75o  and 90o ). 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 (45o, 60o,  75o and 90o ) from the ANSYS Work Bench at same condition are compared with each other and best tubular joint is selected.

Keywords

Tubular Members, Angular Joints, Residual Stresses, Modeling, ANSYS Work Bench.

How to Cite this Article?

Ramakrishna, C. S., Raghuram, K. S., and Kumar, R. A. (2015). Analysis of Residual Stresses on Tubular Welded Joints. i-manager’s Journal on Mechanical Engineering, 5(3), 6-17. https://doi.org/10.26634/jme.5.3.3441

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