Can I read Off-centric extrusion of circular rods through streamlined dies, CAD/CAM applications, analysis and some experiments on EtoBox?

Off-centric extrusion of circular rods through streamlined dies, CAD/CAM applications, analysis and some experiments by K.F. Celik; N.R. Chitkara is a Engineering article available to read on EtoBox.

What is Off-centric extrusion of circular rods through streamlined dies, CAD/CAM applications, analysis and some experiments about?

The previously given analytical method [1], which was based on the upper-bound theory, was used to design the streamlined dies and to investigate the three dimensional o!-centric extrusion of circular sections from initially circular billets through linearly converging (ruled-surface) and smooth curved (advancedsurface) dies. For a reasonably correct upper-bound to the load, a set of generalised kinematically admissible velocity "elds were derived on the assumption of Bezier-type streamlines by incorporating a special velocity function that takes care of the non-uniform material #ow. Based on the present method, for a given reduction in area, material property, friction condition and o!-centric positioning of the exit cross-section, computations were carried out to predict the upper-bound to the extrusion pressures, the deforming grid patterns and curvature of the extruded product. Experiments were carried out for some o!-centric circular sections with varying die lengths and reduction in areas. A sophisticated CAD/CAM package was used in conjunction with the CNC and EDM processes to manufacture the streamlined dies for the o!-centric extrusion of circular rods. Both the solid and

Who reads Off-centric extrusion of circular rods through streamlined dies, CAD/CAM applications, analysis and some experiments?

Author

K.F. Celik; N.R. Chitkara

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0020-7403)

Published

2000

Language

EN

Field

Engineering (Physical Sciences)