Influence of butt welding shapes design on the microstructure and stresses of low carbon steel

Abstract EN

The aim of this paper is to demonstrate the influence of butt welding shapes on the microstructure, temperature and equivalent stresses of carbon steel type St- 37.

The single butt welding was performed by V angles 15°,30°,45° and U shape.

The finite element analysis via ANSYS software is performed, this analysis includes a finite element model for the thermal and mechanical welding simulation.

The equivalent stresses and temperature distribution were obtained.

From the results of the microscopic structure it is evident that the geometric shape has an important role in the welding process, when the geometric value of the welding region gets bigger, the faults get less due to increase of heat quantity in the welding region.

The work presents the finite element model for numerical simulation of welding stresses in carbon steel St-37 butt welding.

The welding simulation was considered as a direct coupled thermo- mechanical analysis.