Advanced computational modelling of metallic wire-arc additive manufacturing

Kovšca, Dejan (avtor), Starman, Bojan (avtor), Ščetinec, Aljaž (avtor), Klobčar, Damjan (avtor), Mole, Nikolaj (avtor)

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.

• Jezik: Slovenski jezik
• Ključne besede: wire-arc additive manufacturing, multi-pass welding, computer simulation, thermo-mechanical numerical model, finite element method
• Tipologija: 1.08 - Objavljeni znanstveni prispevek na konferenci
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Datum objave: 28.03.2021
• Leto izida: 2021
• Št. strani: Str. 1-11
• Številčenje: art. 2340
• PID: 20.500.12556/RUL-126860
• UDK: 004.942:621.9.04(045)
• DOI: 10.25518/esaform21.2340
• COBISS.SI-ID: 63316227
• Datum objave v RUL: 06.05.2021

Gradivo je del monografije

• Naslov: 24th International Conference on Material Forming, Liège, Belgium, 14 - 16 April, 2021 : ESAFORM 2021
• Uredniki: Anne Marie Habraken
• Kraj izida: Liège
• Založnik: AIM
• Leto izida: 2021
• COBISS.SI-ID: 62587395

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 29.03.2021

Sekundarni jezik

• Jezik: Angleški jezik
• Ključne besede: oblikovno obločno navarjanje z žico, večkratno navarjanje, računalniška simulacija, termo-mehanski numerični model

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0263
• Naslov: Mehanika v tehniki