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Hot extrusion process modeling using a coupled upper bound-finite element method

Hosseinabadi, H. G ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.jmapro.2013.10.007
  3. Abstract:
  4. 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
  5. Keywords:
  6. Finite element analysis ; Petrov-Galerkin scheme ; Extrusion ; Finite element method ; Galerkin methods ; Isotherms ; Metal extrusion ; Silicon carbide ; Velocity ; Force-displacement diagrams ; Hot extrusion ; Hot extrusion process ; Non-isothermal condition ; Petrov-Galerkin ; Temperature variation ; Thermomechanical model ; Upper bound solution ; Extrusion dies
  7. Source: Journal of Manufacturing Processes ; Vol. 16, issue. 2 , 2014 , pp. 233-240 ; ISSN: 15266125
  8. URL: http://www.sciencedirect.com/science/article/pii/S1526612513001242