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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/49910

Title: An investigation into friction in dynamic plane upsetting
Authors: J.P.Wang
Contributors: 國立臺灣海洋大學:輪機工程學系
Keywords: Plane-strain upsetting
Slip-line theory
Date: 2002-10
Issue Date: 2018-08-28T01:30:40Z
Publisher: Journal of Material Processing Techn.
Abstract: Abstract: The evaluation of friction on the friction interface in plane-strain upsetting is developed. The distribution of friction shear stress is derived and found to be dependent on the ratio (called the F-coefficient) of the second derivative and the first derivative of the velocity in the x-direction. According to the value of the F-coefficient, friction conditions such as sticking, frictionless, and many kinds of function approximated to linear, exponential, and arc-tangent can be expressed easily. An optimal approach with velocity parameters is used to calculate the F-coefficient at various reductions in height in an experimental approach. It is shown that this method presents a good approach to evaluate friction in comparison with experimental data.
Relation: 123(3) pp.323-328
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/49910
Appears in Collections:[輪機工程學系] 期刊論文

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