A simplified modelling approach for thermal behaviour analysis in hybrid plasma arc-laser additive manufacturing

Chong Wang,Yongle Sun,Guangyu Chen,Xin Chen,Jialuo Ding,Wojciech Suder,Chenglei Diao,Stewart Williams

International Journal of Heat and Mass Transfer（2022）

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摘要

•A 3D steady-state FE model was developed for thermal analysis of hybrid plasma arc-laser additive manufacturing.•Artificial conductivity in three orthogonal directions was applied in the melt pool to compensate for the melt pool convection effect.•This model has advantages over the commonly used volumetric heat source models.•The melt pool geometry at different process conditions was analysed.•The full-field distributions of the cooling rate and thermal gradient were obtained.

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关键词

Hybrid plasma arc-laser additive manufacturing,Steady-state finite element model,Orthotropic artificial conductivity,Melt pool geometry,Thermal variables

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