A profile die design method for a rubber extrudate using an analogy

被引：2
|
作者：
Kauzlarich, JJ [1 ]
机构：
[1] Univ Virginia, Dept Mech Engn, Charlottesville, VA 22904 USA
来源：
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS | 2005年 / 219卷 / L1期
关键词：
extruder die design; die swell; rubber extrusions; tyre extrusion; finite element die design;
D O I：
10.1243/146442005X10247
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Profile die design for extruding rubbers has evolved to the point that three-dimensional finite element analysis of the fluid dynamics is possible, including inlet flow and extrudate swell. These computations are complicated and can involve trial and error when considering extrudate swell. A new method of profile (thin plate) die design is presented which involves a simple finite element computation to predict the die profile to produce an extrudate of prescribed shape: the inverse extrudate process. The method is referenced to an anology between plate deflection and low-Reynolds-number fluid flow. A reference extrudate swell is used to take care of the characteristics of the extruder, operating conditions, extrudate properties, and anology similarity parameters. Analysis for a power-law rubber is presented which predicts the die profile to produce a square extrudate, and a die profile for a tyre extrudate. Comparison of these cases with three-dimensional theory and actual experimental data for the tyre is good.
引用
收藏
页码：37 / 44
页数：8
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