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An improved thermal model for SPH metal cutting simulations on GPU

Afrasiabi, M. ; Klippel, H. ; Roethlin, M. ; Wegener, K.

Applied Mathematical Modelling, 2021-12, Vol.100, p.728-750 [Periódico revisado por pares]

New York: Elsevier Inc

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  • Título:
    An improved thermal model for SPH metal cutting simulations on GPU
  • Autor: Afrasiabi, M. ; Klippel, H. ; Roethlin, M. ; Wegener, K.
  • Assuntos: Algorithms ; Boundary condition ; Boundary conditions ; Cutting parameters ; Cutting speed ; GPU computing ; Graphics processing units ; Heat loss ; Higher-order SPH ; Machining ; Metal cutting ; Modelling ; Robustness (mathematics) ; Simulation ; Smooth particle hydrodynamics ; Thermal analysis ; Thermal modeling ; Titanium ; Workpieces
  • É parte de: Applied Mathematical Modelling, 2021-12, Vol.100, p.728-750
  • Descrição: •An enhanced thermal formulation for SPH in metal cutting.•More realistic boundary conditions, as well as a higher-order Laplacian model.•Remarkable speedup achieved by parallel computing on GPU.•Several validation tests and parameter studies carried out.•FEM and experimental data used to verify forces and chip shapes. [Display omitted] This paper presents the first application of a higher-order Smoothed Particle Hydrodynamics (SPH) method to the thermal modeling of metal cutting problems. With this application, the heat transfer equation in the thermo-mechanical simulation of metal cutting is solved more accurately by addressing the consistency issue of standard SPH formulations. Furthermore, through a robust and effective surface-detection algorithm, this work enables the SPH cutting models to include heat loss thermal boundary conditions for the first time. Process forces, tool temperatures, and chip geometry are numerically investigated in machining a Ti6Al4V workpiece at two different cutting speeds. Several validation tests and sensitivity analyses are performed in high resolution, thanks to the runtime acceleration of SPH by parallel computing on Graphics Processing Units (GPUs). The results show that SPH simulations with the proposed thermal modeling approach achieve more realistic serrated chips in titanium cutting problems.
  • Editor: New York: Elsevier Inc
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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