Finite element modelling of shielded metal arc welding
Date
2005-12
Authors
Cronje, M.
Journal Title
Journal ISSN
Volume Title
Publisher
Stellenbosch : University of Stellenbosch
Abstract
This study involved the modelling and verification of the Shielded Metal
Arc Welding of mild steel with the focus on displacement and temperature
distribution prediction of welded plates.
The project was divided into three phases namely; the literature survey
into finite element modelling of welding processes, the modelling of a welding
process and verification of the modelling with experimental results.
A working welding model was created using a commercial finite element
software package with the capabilities to model welding processes. The welding
model was systematically developed from a two-dimensional model into a threedimensional
full physics process model. Experimental measured welding heat
input parameters were applied in the model, temperature dependent material
properties were applied and actual structural restraints from the experiments
were modelled.
Displacement and temperature distributions were measured on mild steel
plates welded with the Shielded Metal Arc Welding process. The plate
temperature was measured at various locations with K-type thermocouples spot
welded onto the plates. Plate deformation was measured at various stages of the
manufacturing process. Tendencies in plate displacement were investigated with
a change in certain welding parameters. The finite element model was verified
and good correlations were found, especially for the temperature distribution in
the welded plates.
Description
Thesis (MScEng (Mechanical and Mechatronic Engineering))--University of Stellenbosch, 2005.
Keywords
Dissertations -- Mechanical engineering, Theses -- Mechanical engineering, Welding, Welded plates -- Evaluation