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本文以聚合物流休为研究对象，对其在挤出成型中产生的粘弹效应及挤出胀大机理进行了分析和研究，重点论述了流线有限元的数值分析步骤及计算机辅助分析程序的设计方法。
In this paper, polymer flow-off is the research object, and its viscoelastic effect and extrusion expansion mechanism in extrusion are analyzed and studied. The numerical analysis steps of flowline finite element and the computer aided analysis program Design method