SHERP

Nonsteady Plane-strain Ideal Forming without Elastic Dead-zone

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Authors
Lee, Won Ho; Lee, Seok Won; Kang, Tae Jin; Chung, Kwansoo; Youn, Jae Ryoun
Issue Date
2002-03
Publisher
The Korean Fiber Society
Citation
Fibers and Polymers, v.3(3), pp.120-127
Keywords
Rigid-perfect plasticityNonsteady bulk formingCharacteristic methodOrthogonal convective coordinate system
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.
ISSN
1229-9197
Language
English
URI
http://hdl.handle.net/10371/19181
DOI
https://doi.org/10.1007/BF02892628
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Material Science and Engineering (재료공학부) Journal Papers (저널논문_재료공학부)
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