NDLI: Slab Method of Analysis for Three Dimensional Forward Extrusion of Squared End Section

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Ghoshchi, Amin Samadi Ghoshchi, Aydin Smadi Bazargani, Sajad Mohammadi Emami, Sajjad
Copyright Year	2010
Abstract	Slab method of analysis has been used for solving metal forming problems for a long time. However it has been restricted to plane strain and axisymmetric problems due to limitations in its formulations. In this paper a new formulation has been proposed so that it could be applied to three dimensional problems in metal forming. A parametric slab has been considered in this analysis and the force balance on the slab was carried out to obtain equilibrium equations in terms of these parameters. The parameters in fact are related to the geometry of the final extruded shape, the die and the material flow regime assumed in the formulation. In this way most of the limitations encountered in previous formulations were surpassed. In fact the parametric slab considered in this formulation is a very general element that could be adjusted to any changes made in the process. As an example the forward extrusion of a square cross section was analyzed using the new formulation. The effect of reduction of area, frictional conditions and other process parameters on the extrusion pressure was investigated. The theoretical results obtained in this paper were compared with similar results of previous work from other methods and good agreement was observed. Dies were designed and manufactured based on this analysis for several reductions of area. Tests were done using above dies and the experimental data were found to verify the theoretical results. It was concluded that the new slab method of analysis gave reasonable results for the problem analyzed and that it could be applied to other bulk metal forming processes such as rolling, wire drawing and forging.
Sponsorship	International
Starting Page	491
Ending Page	495
Page Count	5
File Format	PDF
ISBN	9780791849187
DOI	10.1115/ESDA2010-24884
e-ISBN	9780791838778
Volume Number	ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis, Volume 4
Conference Proceedings	ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis
Language	English
Publisher Date	2010-07-12
Publisher Place	Istanbul, Turkey
Access Restriction	Subscribed
Subject Keyword	Forward extrusion Slab method Shaped sections Three dimensional Extruding Slabs
Content Type	Text
Resource Type	Article

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