Wire-Arc-Additive-Manufacturing (WAAM) is an Additive-Manufacturing (AM) process, allowing to produce metal components layer by layer by means of Gas-Metal-Arc-Welding (GMAW) technology. The advantages of this technology are the capability to create large parts with a higher deposition rate with respect to other AM technologies. Despite these great benefits, WAAM components are affected by severe distortions and residual stresses issues. Finite element process simulation provides an efficient way to study mitigation strategies for such issues. In this paper, a WAAM modelling strategy is proposed based on a novel heat source model that takes into account the actual power distribution between filler and base materials. In order to prove the effectiveness of proposed modelling, an experimental validation is provided by comparing the measured distortions of a WAAM tests-case with the simulated ones, highlighting the accuracy of proposed model.

Finite Element Modelling of Wire-arc-additive-manufacturing Process / Montevecchi, Filippo; Venturini, Giuseppe; Scippa, Antonio; Campatelli, Gianni. - ELETTRONICO. - 55:(2016), pp. 109-114. (Intervento presentato al convegno 5th CIRP Global Web Conference Research and Innovation for Future Production, 2016 tenutosi a Laboratory for Manufacturing Systems and Automation (LMS), University of Patras, grc nel 2016) [10.1016/j.procir.2016.08.024].

Finite Element Modelling of Wire-arc-additive-manufacturing Process

MONTEVECCHI, FILIPPO;VENTURINI, GIUSEPPE;SCIPPA, ANTONIO;CAMPATELLI, GIANNI
2016

Abstract

Wire-Arc-Additive-Manufacturing (WAAM) is an Additive-Manufacturing (AM) process, allowing to produce metal components layer by layer by means of Gas-Metal-Arc-Welding (GMAW) technology. The advantages of this technology are the capability to create large parts with a higher deposition rate with respect to other AM technologies. Despite these great benefits, WAAM components are affected by severe distortions and residual stresses issues. Finite element process simulation provides an efficient way to study mitigation strategies for such issues. In this paper, a WAAM modelling strategy is proposed based on a novel heat source model that takes into account the actual power distribution between filler and base materials. In order to prove the effectiveness of proposed modelling, an experimental validation is provided by comparing the measured distortions of a WAAM tests-case with the simulated ones, highlighting the accuracy of proposed model.
2016
Procedia CIRP
5th CIRP Global Web Conference Research and Innovation for Future Production, 2016
Laboratory for Manufacturing Systems and Automation (LMS), University of Patras, grc
2016
Montevecchi, Filippo; Venturini, Giuseppe; Scippa, Antonio; Campatelli, Gianni
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1074298
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