Shape Distortion Prediction in Complex 3D Parts Induced During the Selective Laser Melting Process

Dimitrios Bompos (1) , Julien Chaves-Jacob (1) , Jean-Michel Sprauel (1)

1 ISM - Institut des Sciences du Mouvement Etienne Jules Marey

A computational thermomechanical model is proposed to predict the shape distortions of parts produced by additive manufacturing. This process induces material fusion and thus thermal and metallurgical phenomena. A simple experimental calibration is in to include their combined effect in the proposed model. As in additive manufacturing itself, the proposed model works in a layer-by-layer basis. The layers are linked using thermally activated contact elements. The model is validated experimentally, using a complex part, printed by Selective Laser Melting. The model was able to accurately predict the real shape deviations. This work represents a step toward a digital twin.

Mots clés: Selective laser melting (SLM); Simulation; Deformation

Domaines: Sciences de l'ingénieur [physics]; Génie mécanique [physics.class-ph]

Dimitrios Bompos, Julien Chaves-Jacob, Jean-Michel Sprauel. Shape Distortion Prediction in Complex 3D Parts Induced During the Selective Laser Melting Process. CIRP Annals - Manufacturing Technology, 2020, ⟨10.1016/j.cirp.2020.04.014⟩. ⟨hal-02975000⟩