Hot extrusion process modeling using a coupled upper bound-finite element method |
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| Institution: | 1. University of Luxembourg, FSTC, 6, rue Coudenhove-Kalergi, 1359 Luxembourg, Luxembourg;2. GM Global R&D, 30500 Mound Road, Warren, MI 48090-9055, USA;1. MUSP Lab, Piacenza, Italy;2. Fonderia Maspero srl, Monza, Italy;3. Politecnico di Milano, Dipartimento di Meccanica, Milan, Italy;1. Department of Mechanical Engineering, University of Louisiana at Lafayette, Lafayette, LA 70504, USA;2. Department of Physics, University of North Texas, Denton, TX 76203, USA;3. Department of Mechanical Engineering Technology, Michigan Technological University, Houghton, MI 49913, USA;1. Department of Mechanical Engineering, Vanderbilt University, 2400 Highland Avenue, 101 Olin Hall, Nashville, TN 37212, United States;2. Department of Electrical Engineering and Computer Science, Vanderbilt University, 400 24th Avenue South, 254 Featheringill Hall, Nashville, TN 37212, United States |
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| Abstract: | A thermo-mechanical model has been developed for modeling of hot extrusion processes. Accordingly, an admissible velocity field was first proposed by means of stream function method and then, extrusion pressure as well as temperature variations within the metal and the die were predicted employing a combined upper bound and Petrov–Galerkin finite element analysis. In order to evaluate the model predictions, hot extrusion of AA6061-10%SiCp was considered under both isothermal and non-isothermal conditions and the predicted force–displacement diagrams under various extrusion conditions were compared with the experimental ones and reasonable consistency was found between the two sets of results. |
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| Keywords: | Upper bound solution Petrov–Galerkin scheme Finite element analysis Hot extrusion |
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