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Upper Bound Analysis of Tube Extrusion Process Through Rotating Conical Dies with Large Mandrel Radius

Credit to Download: 1 | Page Numbers 13 | Abstract Views: 31
Year: 2015
COI code: JR_JSMA-7-2_006
Paper Language: English

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Authors Upper Bound Analysis of Tube Extrusion Process Through Rotating Conical Dies with Large Mandrel Radius

  H Haghighat - Mechanical Engineering Department, Razi University, Kermanshah
  M.M Mahdavi - Mechanical Engineering Department, Razi University, Kermanshah

Abstract:

In this paper, an upper bound approach is used to analyze the tube extrusion process through rotating conical dies with large mandrel radius. The material under deformation in the die and inside the container is divided to four deformation zones. A velocity field for each deformation zone is developed to evaluate the internal powers and the powers dissipated on all frictional and velocity discontinuity surfaces. By minimization of the total power with respect to the slippage parameter between tube and the die and equating it with the required external power, the extrusion pressure is determined. The corresponding results for rotating conical dies are also determined by using the finite element code, ABAQUS. The analytical results show a good coincidence with the results by the finite element method with a slight overestimation. Finally, the effects of various process parameters such as mandrel radius, friction factor, etc., upon the relative extrusion pressure are studied.

Keywords:

Tube extrusion, Rotating conical die, Upper bound method

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https://www.civilica.com/Paper-JR_JSMA-JR_JSMA-7-2_006.html
COI code: JR_JSMA-7-2_006

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Haghighat, H & M.M Mahdavi, 2015, Upper Bound Analysis of Tube Extrusion Process Through Rotating Conical Dies with Large Mandrel Radius, Journal of Solid Mechanics 7 (2), https://www.civilica.com/Paper-JR_JSMA-JR_JSMA-7-2_006.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Haghighat, H & M.M Mahdavi, 2015)
Second and more: (Haghighat & Mahdavi, 2015)
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Type: state university
Paper No.: 7854
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