V.V. Dolynenko, E.V. Shapovalov
Èlektron. model. 2024, 46(6):97-108
https://doi.org/10.15407/emodel.46.06.097
ABSTRACT
The paper presents the synthesis and mathematical modeling in the Mathcad environment of a composite heat source model simulating an arc heat source during electric arc surfacing with transverse oscillations of the torch. The model is a superposition of three double-elliptical Goldak heat source models. The distinctive feature of this model is that the output function is implemented using logical operators, which makes it possible to implement a functional transformation similar to the symmetric difference operation in set theory. This ensures the exclusion of areas overlapped by adjacent heat sources from the total heat flow. The modeling was performed for three cases of transverse oscillations of the torch: sinusoidal, triangular and rectangular. The modeling results can be useful for specialists in the field of finite element modeling of electric arc surfacing processes, as well as in the development of WAAM technology.
KEYWORDS
Goldak double elliptical heat source model, electric arc welding, transverse torch oscillations, composite heat source model.
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