TY - JOUR A1 - Artinov, Antoni A1 - Bachmann, Marcel A1 - Rethmeier, Michael A1 - Karkhin, V. A1 - Khomich, P. T1 - Modeling of hydrodynamic and thermal processes at laser welding with through penetration T2 - Welding International N2 - A mathematical model for physical processes in fusion welding has been developed. It is based on the equivalent heat source concept and consists of two parts: thermo-hydrodynamics of the weld pool and heat conduction in the weldment outside the pool. In thermo-hydrodynamic problem, temperature – dependent material properties, keyhole shape, thermo-capillary and natural convection, phase transformations and other physical phenomena are taken into consideration. Solution of the thermo-hydrodynamic problem by the finite element method is demonstrated with keyhole laser beam welding of a 15 mm thick steel plate. Thermo-capillary convection is primarily responsible for the intricate convex-concave melt pool shape and pool enlargement near the plate surfaces. The calculated and experimental molten pool dimensions are in close agreement. PB - Taylor & Francis Group KW - Laser welding KW - Weld pool modeling KW - Heat conduction KW - Greens function method PY - 2021 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/54022 AN - OPUS4-54022 SP - 1 EP - 12 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany