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Analytical-FE modeling of high-speed dry machining of the aeronautical aluminium alloy AA2024-T351

Abstract : In dry high speed machining of aluminium alloy AA2024-T351, the thermomechanical process of chip formation, the tool wear and the surface integrity depend strongly on the tribological conditions along the tool rake face. In the present work, we propose a hybrid Analytical-FE model taking into account the thermomechanical coupling between the chip formation process and the sticking-sliding conditions at the tool-chip interface. The transient nonlinear thermal problem in the tool-chip-workpiece system is solved by using a Petrov-Galerkin finite element model. The model has been compared to the experimental data for a wide range of cutting speeds. This comparison shows a good agreement in both trends and values for cutting forces and tool-chip contact length. It has been also observed that a transition from a sliding contact to a sticking-sliding contact occurs when the local friction coefficient and the thermal softening are large enough.
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https://hal.univ-lorraine.fr/hal-03375962
Contributor : Gael Le Coz Connect in order to contact the contributor
Submitted on : Wednesday, October 13, 2021 - 10:58:15 AM
Last modification on : Saturday, October 16, 2021 - 11:22:20 AM

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  • HAL Id : hal-03375962, version 1

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Y Avevor, A Moufki, M Nouari. Analytical-FE modeling of high-speed dry machining of the aeronautical aluminium alloy AA2024-T351. High Speed Machining 2016, 2016, METZ, France. ⟨hal-03375962⟩

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