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NEM-FEM comparison on porthole die extrusion of AA-6082

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Abstract

Porthole die extrusion is a forming process used to manufacture hollow components with different shapes. This forming process is optimized to improve the welding line quality. Process optimization can be achieved by determining the influences that each process parameter has on the pressure along the welding plane. The construction complexity of the die results in research difficulty from an experimental point of view. Even the finite element method (FEM) presents relevant drawbacks primarily because of numerical codes are not capable of simulating the welding phase. Hence, the natural element method (NEM), which allows the joining phase of free surfaces, presents significant advantages. In this work, experimental results obtained using a flexible porthole die are discussed. A suitable 2D geometry was extracted from the die, and both FEM and NEM were conducted. A good agreement among the numerical results was recorded.

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Authors and Affiliations

  1. Department of Mechanical Engineering, University of Calabria, 87036, Rende (CS), Italy

    Francesco Gagliardi, Giuseppina Ambrogio & Luigino Filice

  2. Aragón Institute of Engineering Research, 50018, Zaragoza, Spain

    Iciar Alfaro & Elias Cueto

Authors
  1. Francesco Gagliardi
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  2. Iciar Alfaro
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  3. Giuseppina Ambrogio
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  4. Luigino Filice
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  5. Elias Cueto
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Corresponding author

Correspondence to Giuseppina Ambrogio.

Additional information

Recommended by Associate Editor Dae-Cheol Ko

Francesco Gagliardi graduated with a mechanical engineering degree at the University of Calabria (2003). He obtained his PhD at the same university (2007). He was a visiting scholar at Ohio State University, USA (2006), and a visiting researcher both at Aragón Institute of Engineering Research, Spain (2009) and at Institut für Umformtechnik und Leichtbau, Germany (2012). He is currently pursuing a postdoc at the University of Calabria. He has conducted research on different fields of plastic forming processes.

Giuseppina Ambrogio graduated with a management engineering degree at the University of Calabria (1999). She obtained her PhD at the same university (2006) with a dissertation entitled, “An extended analysis on flexible sheet metal forming processes.” During the PhD course, she became a visiting scholar at the Institute of Metal Forming (IBF) of RWTH University of Aachen (Germany), cooperating with the Cold Forming Group for the design of an innovative equipment for the flexible profile rolling of Tailor Rolled Blanks. In November 2005, she became an assistant professor in Manufacturing at the Department of Mechanical Engineering (University of Calabria).

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Gagliardi, F., Alfaro, I., Ambrogio, G. et al. NEM-FEM comparison on porthole die extrusion of AA-6082. J Mech Sci Technol 27, 1089–1095 (2013). https://doi.org/10.1007/s12206-013-0229-1

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  • DOI: https://doi.org/10.1007/s12206-013-0229-1

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