TY - JOUR
TI - Numerical modeling of two-dimensional heat-transfer and temperature-based calibration using simulated annealing optimization method: Application to gas metal arc welding
AU - Bjelić Mišo B
AU - Kovanda Karel
AU - Kolařík Ladislav
AU - Vukićević Miomir N
AU - Radičević Branko S
JN - Thermal Science
PY - 2016
VL - 20
IS - 2
SP - 655
EP - 665
PT - Article
AB - Simulation models of welding processes allow us to predict influence of  welding parameters on the temperature field during welding and by means of  temperature field and the influence to the weld geometry and microstructure.  This article presents a numerical, finite-difference based model of heat  transfer during welding of thin sheets. Unfortunately, accuracy of the model  depends on many parameters, which cannot be accurately prescribed. In order  to solve this problem, we have used simulated annealing optimization method  in combination with presented numerical model. This way, we were able to  determine uncertain values of heat source parameters, arc efficiency,  emissivity and enhanced conductivity. The calibration procedure was made  using thermocouple measurements of temperatures during welding for P355GH  steel. The obtained results were used as input for simulation run. The  results of simulation showed that represented calibration procedure could  significantly improve reliability of heat transfer model. [National CEEPUS  Office of Czech Republic (project CIII-HR-0108-07-1314) and to the Ministry  of Education and Science of the Republic of Serbia (project TR37020)]