Charles‐André Gandin
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View article: Thermo-mechanical simulation of L-PBF process at part-scale by coupling grain structure calculation and crystal viscoplasticity
Thermo-mechanical simulation of L-PBF process at part-scale by coupling grain structure calculation and crystal viscoplasticity Open
International audience
View article: Metallurgically-driven thermomechanical analysis of multiple side-to-side laser melting on a 316L substrate
Metallurgically-driven thermomechanical analysis of multiple side-to-side laser melting on a 316L substrate Open
International audience
View article: Multiphysics simulation and microstructure prediction of coaxial wire-laser additive manufacturing process
Multiphysics simulation and microstructure prediction of coaxial wire-laser additive manufacturing process Open
International audience
View article: macro-scale thermal modeling for optimization of preheating strategies during laser powder bed fusion of inconel 738 parts
macro-scale thermal modeling for optimization of preheating strategies during laser powder bed fusion of inconel 738 parts Open
During additive manufacturing by laser powder bed fusion (L-PBF), a part undergoes rapid thermal cycling with significant heating and cooling rates. This thermal history leads to the initiation of microcracks that degrade the material prop…
View article: Thermohydraulic modelling of the WLAM process - Application to the prediction of grain structure development on Inconel alloys
Thermohydraulic modelling of the WLAM process - Application to the prediction of grain structure development on Inconel alloys Open
The Wire Laser Additive Manufacturing (WLAM) process produces components with an excellent quality finish and a high degree of precision. A laser heat source is applied onto a metal filler wire used as feedstock, leading to its progressive…
View article: Homogenization methods for thermal study of support structure in laser powder bed fusion (L-PBF) – application to process numerical modeling
Homogenization methods for thermal study of support structure in laser powder bed fusion (L-PBF) – application to process numerical modeling Open
Purpose This paper aims to report on a homogenized model for the anisotropic thermal conductivity of support structures constructed by the laser powder bed fusion (L-PBF) process, and its application to the numerical simulation of the L-PB…
View article: Part-Scale Thermomechanical and Grain Structure Modeling for Additive Manufacturing: Status and Perspectives
Part-Scale Thermomechanical and Grain Structure Modeling for Additive Manufacturing: Status and Perspectives Open
Thermomechanical modeling of additively manufactured parts made by laser powder bed fusion aims to control stresses and distortions built during processing. This is, by nature, a multiscale metallurgical and mechanical problem, notably due…
View article: Solidification path for rapid solidification – Application to multicomponent alloys for L-PBF
Solidification path for rapid solidification – Application to multicomponent alloys for L-PBF Open
Laser Powder Bed Fusion (L-PBF) is seen as a process of interest by aeronautical industry to develop new engine components. Nevertheless, the reliability and durability of parts produced by L-PBF depend on the possibility to suppress the o…
View article: Simulation of dendritic grain structures with a Cellular Automaton – Parabolic Thick Needle model
Simulation of dendritic grain structures with a Cellular Automaton – Parabolic Thick Needle model Open
A multiscale numerical model, coupling the Cellular Automaton (CA) method to the Parabolic Thick Needle (PTN) method, is developed to compute dendritic microstructures. It is applied to directional solidification of bi-crystals under a fro…
View article: Modelling of microstructures development in laser powder bed fusion process – Application to IN718 superalloy
Modelling of microstructures development in laser powder bed fusion process – Application to IN718 superalloy Open
In laser powder bed fusion (L-PBF) process, a deposited powder layer is melted by a laser and solidifies when the laser moves away. During solidification, the microstructure of the part is formed due to both epitaxial grain growth and nucl…
View article: Anisotropic Mechanical Behaviour of Nickel Based Single Crystal Superalloy CMSX-4 for Prediction of Grain Recrystallization during Homogenization Heat Treatment Following Solidification
Anisotropic Mechanical Behaviour of Nickel Based Single Crystal Superalloy CMSX-4 for Prediction of Grain Recrystallization during Homogenization Heat Treatment Following Solidification Open
In the present work, a methodology to identify parameters of an elastic viscoplastic behaviour law is presented. Orthotropic elasticity and Hill48 plastic anisotropy for as-cast CMSX-4 are considered. In order to obtain the corresponding p…
View article: Thermomechanical analysis of the solidification of fused cast alumina-zirconia-silica refractory blocks
Thermomechanical analysis of the solidification of fused cast alumina-zirconia-silica refractory blocks Open
Cooling history of fused cast Alumina-Zirconia-Silica (AZS) refractory blocks is recorded with thermocouples. Postmortem investigations are performed including hot tears. Discussion about solidification path is done with the purpose to bet…
View article: Anisotropic Mechanical Behaviour of Nickel Base Single Crystal Superalloy CMSX-4 for Prediction of Grain Recrystallization during Homogenization Heat-treatment Following Solidification
Anisotropic Mechanical Behaviour of Nickel Base Single Crystal Superalloy CMSX-4 for Prediction of Grain Recrystallization during Homogenization Heat-treatment Following Solidification Open
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View article: Finite Element Modeling of Powder Bed Fusion at Part Scale by a Super-Layer Deposition Method Based on Level Set and Mesh Adaptation
Finite Element Modeling of Powder Bed Fusion at Part Scale by a Super-Layer Deposition Method Based on Level Set and Mesh Adaptation Open
A super-layer deposition method is developed for 3D macroscopic finite element modeling of heat transfer at part scale during the powder bed fusion (PBF) process. The proposed super-layer strategy consists of the deposition of batches of s…