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中文： 研究表明：熔体在滑移段的停留时间与材料松弛时间之比与挤出胀大比之间存在指数衰减关系，其数学关系可用方程 B=Ae-t/r（A≈0.2~0.8）表示，其实质是熔体在滑移段处于形变衰减过程。理论分析与数值模拟具有高度的一致性，该方程可用于指导气辅口模设计。 [ Last edited by gyf3100003007 on 2008-2-19 at 08:33 ] |
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xhzyyangyang
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Chinese: The results show that: melt in the slip of the residence time and materials and the ratio of relaxation time than extrudate swell between exponential decay, the mathematical equation can be used between B = Ae-t / r (A ≈ 0.2 to 0.8) , and its essence is to melt in a slip deformation of the decay process. Theoretical analysis and numerical simulation with a high degree of consistency, the equation can be used to guide design of gas-assisted die. |
2楼2008-02-19 13:54:44
knightstar
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gyf3100003007(金币+2,VIP+0):不错，谢谢
gyf3100003007(金币+2,VIP+0):不错，谢谢
| According to the research ,the residence time of melt in its slipping section has a relation of exponential decay with its relaxation time ratio and extrusion swell ratio.Its mathematical relation can be expressed by this equation B=Ae-t/r（A≈0.2~0.8）.In fact ,melt in the slipping section is in the process of deformation decay.Theoretical analysis and numerical simulation match well,so the equation can be used as a guidence in the design of gas-assisted dies |
3楼2008-02-19 14:39:03
knightstar
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4楼2008-02-19 14:39:34
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