| 胶管挤出模熔体流动行为的数值研究 |
| Numerical Study on Melt Flow Behavior of Rubber Hose Extrusion Molding |
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| DOI： |
| 中文关键词: 胶管 挤出模 流道 流动行为 数值分析 |
| 英文关键词: rubber hose extrusion mold channel flow behavior numerical analysis |
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| 中文摘要: |
| 基于待修正的直角胶管挤出模，根据流体力学定律建立虚拟熔体挤出系统。采用ANSYS有限元分析软件模拟在挤出预成型系统中橡胶熔体的流动行为，考察流道主要结构参数（分流锥宽度、阻流锥前端到入口距离及流道底部半径）对挤出模关键指标（速率相对平均偏差）的影响。结果表明，根据流体力学定律调节主要结构参数能够降低直角挤出模出口熔体的速率相对平均偏差。修正挤出模试验进一步验证模具结构设计的准确性，对优化挤出模设计有指导意义。 |
| 英文摘要: |
| Based on T－shape rubber hose extrusion mold，a virtual melt extrusion system was established according to fluid mechanics theories.By using ANSYS finite element software，the flow behavior of rubber melt was simulated in pre－shaping stage of the extrusion system，and the effect of main structural parameters of the channel（the width of split cone，the distance from drag cone front end to channel inlet，and the radius of bottom part of the channel） on the key performance of extrusion mold，the relative deviation of velocity，was analyzed.The results indicated that adjustment of the main structural parameters according to the law of fluid mechanics could reduce the average deviation.The simulated results were confirmed by experimental test of modified extrusion mold.It was demonstrated that the numerical simulation method was a valuable guide to optimization of the extrusion mold structural design. |
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