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Nonsteady plane-strain ideal forming without elastic dead-zone

Nonsteady plane-strain ideal forming without elastic dead-zone Ever since the ideal forming theory has been developed for process design purposes, application has been limited to sheet forming and, for bulk forming, to two-dimensional steady flow. Here, application for the non-steady case was made under the plane-strain condition. In the ideal flow, material elements deform following the minimum plastic work path (or mostly proportional true strain path) so that the ideal plane-strain flow can be effectively described using the two-dimensional orthogonal convective coordinate system. Besides kinematics, schemes to optimize preform shapes for a prescribed final part shape and also to define the evolution of shapes and frictionless boundary tractions were developed. Discussions include numerical calculations made for a real automotive part under forging. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Fibers and Polymers Springer Journals

Nonsteady plane-strain ideal forming without elastic dead-zone

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References (16)

Publisher
Springer Journals
Copyright
Copyright © The Korean Fiber Society 2002
ISSN
1229-9197
eISSN
1875-0052
DOI
10.1007/bf02892628
Publisher site
See Article on Publisher Site

Abstract

Ever since the ideal forming theory has been developed for process design purposes, application has been limited to sheet forming and, for bulk forming, to two-dimensional steady flow. Here, application for the non-steady case was made under the plane-strain condition. In the ideal flow, material elements deform following the minimum plastic work path (or mostly proportional true strain path) so that the ideal plane-strain flow can be effectively described using the two-dimensional orthogonal convective coordinate system. Besides kinematics, schemes to optimize preform shapes for a prescribed final part shape and also to define the evolution of shapes and frictionless boundary tractions were developed. Discussions include numerical calculations made for a real automotive part under forging.

Journal

Fibers and PolymersSpringer Journals

Published: Sep 1, 2002

Keywords: Rigid-perfect plasticity; Nonsteady bulk forming; Characteristic method; Orthogonal convective coordinate system

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