Die entry pressure drops in paste extrusion

被引：67

作者：

Horrobin, DJ ^{[1
]}

Nedderman, RM ^{[1
]}

机构：

[1] Univ Cambridge, Dept Chem Engn, Cambridge CB2 3RA, England

来源：

CHEMICAL ENGINEERING SCIENCE | 1998年 / 53卷 / 18期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1016/S0009-2509(98)00105-5

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Pressure drops for the extrusion of a perfectly plastic material through smooth-walled dies with various reduction ratios and conical entry angles have been calculated by the large deformation elastic-plastic finite element method. They are found to agree well with extrusion pressures obtained from slipline field analyses for plane strain problems, and lie within the limits set by upper- and lower-bound solutions in axisymmetric cases. The results for axisymmetric dies are compared with the die entry pressure drop term in the Benbow-Bridgwater equation, used to describe the flow of pastes in a ram extruder. (C) 1998 Elsevier Science Ltd. All rig hts reserved.

引用

页码：3215 / 3225

页数：11

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