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Bulgarian Journal of Physics
Print: 1310-0157 Online: 1314-2666
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RECOGNIZED BY THE EUROPEAN PHYSICAL SOCIETY 
Bulg. J. Phys. vol.35 no.2 (2008), pp. 107-118
Development and Application of Three-Dimensional Numerical Model for Characterization of Thermal Fields during Surface Laser Treatment of Solid Materials
V. Antonov1, I. Iordanova2
1Institute of Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 72 Tzarigradsko chaussee Blvd., Sofia 1784, Bulgaria
2Department of Solid State Physics and Microelectronics, Faculty of Physics, University of Sofia, 5 J. Bouchier Blvd., Sofia 1164, Bulgaria
go back1Institute of Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 72 Tzarigradsko chaussee Blvd., Sofia 1784, Bulgaria
2Department of Solid State Physics and Microelectronics, Faculty of Physics, University of Sofia, 5 J. Bouchier Blvd., Sofia 1164, Bulgaria
Abstract. The finite elements method (FEM) with cylindrical symmetry was developed for solving the three-dimensional differential heat transfer equation. The method was applied for the characterization of the temperature field created in low carbon sheet steel during its surface laser treatment with Nd:Glass pulsed laser. The influences of the temperature dependences of the material thermal properties and the energy distribution across the laser beam have been analyzed. A comparison with the results obtained by the frequently used one-dimensional FEM was performed.