Through fiber orientation investigation to visualize compression molding
Through fiber orientation investigation to visualize compression molding
复制标题
通过纤维取向研究使压缩成型可视化
DOI：
10.1063/1.4873856
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
R. Chang
中科院分区：
文献类型：
--
作者：
Chih;H. Chiu;Chao;R. Chang
摘要后请留一行空白。在纯压缩过程中，通过移动模具的活动压板将聚合物熔体压缩为流动，完成熔体填充。然后，熔融体的压缩由芯侧模具壁施加的压力继续进行。该工艺在型腔壁上提供更均匀的压力，并且需要较低的成型压力进行后填充工艺。由于纤维取向分布影响成品件的弹性性能，因此了解纤维取向分布对收缩和翘曲发展的影响是很重要的。本文介绍了一种真正的基于三维有限体积的模拟工具，通过纤维取向预测来模拟非等温压缩成型过程。对于压缩作用，采用一种新颖的动态移动网格方法，计算域随时间变形，实现压缩过程中复杂的推进流锋。利用仿真工具对光纤定向分布进行了分析。
Please leave one line blank after the abstract. In a pure compression process, polymer melt is compressed to flow by moving the movable platen of the mold to complete melt filling. Compression of the melt is then continued by the pressure exerted from the mold wall of the core side. This process provides a more uniform pressure on the cavity wall and requires a lower molding pressure for the post-filling process. Since the fiber orientation distribution affects both the elastic properties of the finished part, it is important to know the influence in the development of shrinkage and warpage. This study introduces a true 3D finite volume based simulation tool to simulate the nonisothermal compression molding process with the fiber orientation prediction. For the compression action, a novel dynamic moving grid approach is adopted, where the computational domain will deform with time to realize the complex advancing flow front during compression. By means of simulation tool, the distribution of fiber orienta...