20.500.12556/RUL-126860 Advanced computational modelling of metallic wire-arc additive manufacturing Wire-arc welding-based additive manufacturing (WAAM) is a 3D printing technology for production of near-net-shape parts with complex geometry. This printing technology enables to build up a required shape layer by layer with a deposition of a consumable welding wire, where the welding arc is a source of heat. Welding is usually performed by CNC-controlled robotic manipulator, which provides a controlled location of material layer adding. Because the process itself involves thermo-mechanically complex phenomena, Finite Element-based virtual models are commonly employed to optimize the process parameters. This paper presents advanced computational modelling of the WAAM of a tube. A thermo-mechanical numerical model of the process is calibrated against experimental data, measured as temperature variation at the acquisition point. The virtual modelling starts with a preparation of the tube geometry in CAD software, where the geometry of the single-layer cross-section is assumed. The geometry is then exported to a G-code format data file and used to control robotic manipulator motion. On the other side, the code serves as an input to in-house developed code for automatic FEs activation in the simulation of the material layer-adding process. The time of activation of the finite elements (FEs) is directly related to the material deposition rate. The activation of the FEs is followed by a heat source, modeled with a double ellipsoidal power density distribution. The thermo-mechanical problem was solved as uncoupled to speed-up computation. wire-arc additive manufacturing multi-pass welding computer simulation thermo-mechanical numerical model finite element method oblikovno obločno navarjanje z žico večkratno navarjanje računalniška simulacija termo-mehanski numerični model true false true Slovenski jezik Angleški jezik Neznano 2021-05-06 13:07:54 2021-05-06 13:07:54 2022-09-06 03:48:53 0000-00-00 00:00:00 2021 0 0 Str. 1-11 art. 2340 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2021-03-28 004.942:621.9.04(045) 10.25518/esaform21.2340 63316227 62587395 RAZ_Kovsca_Dejan_2021.pdf RAZ_Kovsca_Dejan_2021.pdf 1 5EE35E00E74CC09B6EF39833F1978767 a9ebf9fea9f28f9d57f1286e74b898acd23e5320276ff3bd2786a6abf7fe0473 b7ee387a-ae5c-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=142959 https://popups.uliege.be/esaform21/index.php?id=2340 0 9c177e40-ae5c-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=142956 Fakulteta za strojništvo 0 0 0