Application of Analysis for Optimum Butt Welded Joint for Different Materials of Weldments

Weld failure due to vibrations can be minimized if appropriate measures are implemented to ensure forced vibration is not equal to the natural frequency of the material. This focuses on determining the optimum butt welded joint, by analyzing the various natural frequencies and mode shape responses obtained from five different types of butt joints. In this study, modal analysis was carried out using ANSYS 2019 R3 on two plates of same material in each case that are welded together. The same procedure is repeated for three different materials namely Structural steel, Copper alloy, Aluminum alloy. Five different geometries of butt joints namely: single V groove butt weld, double V groove butt weld, single U groove butt weld, double U groove butt weld and square groove butt welded joints were examined. The natural frequencies and mode shape deformations obtained were compared with the natural frequency of corresponding material of no weld plate and are found to be satisfactory.