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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/26520

Title: Rigid-plastic boundaries approach to the analysis of arbitrary profile dies in axisymmetric extrusion
Authors: Guo-Ming Huang;Jang-Ping Wang;Hsien-Der Lee;Cheng-Sung Chang
Contributors: 國立臺灣海洋大學:輪機工程學系
Keywords: Axisymmetric extrusion;Generalized rigid-plastic boundaries;Arbitrary profile of dies
Date: 2009-05-01
Issue Date: 2011-10-20T08:36:31Z
Publisher: Journal of Materials Processing Technology
Abstract: Abstract:A new theoretical model to analyze arbitrary profiles of extrusion dies is proposed in this paper. In this model, generalized rigid-plastic boundaries with optional variables are used to minimize the power by the upper-bound method. To satisfy the velocity boundary conditions at the entrance and exit, the streamline function is designed in the normal form of r(η, z), which satisfies the flow conditions and the rigid-plastic boundaries. Four sets of profile dies (cosine, elliptic, hyperbolic, and conic) are represented with different slopes at the entrance and exit in order to illustrate this method. Experiments were conducted in order to compare the results with those of the theoretical model. It was found that the predicted load and flow patterns were in agreement with the experimental observation and the results from the literature.
Relation: 209(9), pp.4351–4359
URI: http://ntour.ntou.edu.tw/handle/987654321/26520
Appears in Collections:[輪機工程學系] 期刊論文

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