A Model for Permeability in Fibre Reinforced Plastics

IF 0.8 4区工程技术 Q4 ENGINEERING, MECHANICAL

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2023-06-23 DOI:10.1139/tcsme-2022-0084

A. Sherratt, M. Ghazimoradi, J. Montesano, A. Straatman, C. DeGroot, F. Henning

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引用次数: 0

Abstract

Increased use of continuous fibre reinforced plastics (CoFRP) is being seen in the automotive industry due to their high strength specific properties. The manufacturing process, however, is still expensive due to the number of critical steps and material cost. Cost reduction is being combated by computational modeling of the infiltration and curing process to predict void formation and other potential defects. The accuracy of these simulations is highly dependent on capturing the presence of the carbon sheets in the mold due to the large differences in permeability between flow parallel and normal to the fibre tows. This work presents a geometry based method for locally orienting the fibre and thickness direction for 2D extruded CoFRP components. The capabilities of these methods will be presented by comparing the fibre orientation prediction for two geometries (i.e., hat channel and double dome) using 3 difference draping schemes (i.e., 0°, 45°, 90°) against the results of a validated draping simulation developed in LS-DYNA.

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纤维增强塑料的渗透性模型

连续纤维增强塑料（CoFRP）由于其高强度的特定性能，在汽车行业的使用越来越多。然而，由于关键步骤的数量和材料成本，制造过程仍然是昂贵的。通过对渗透和固化过程进行计算建模来预测孔隙形成和其他潜在缺陷，正在努力降低成本。这些模拟的准确性在很大程度上取决于捕捉模具中碳片的存在，因为平行于纤维束和垂直于纤维束的流动之间的渗透率存在很大差异。这项工作提出了一种基于几何结构的方法，用于对2D挤压CoFRP构件的纤维和厚度方向进行局部定向。这些方法的能力将通过将使用3种不同悬垂方案（即0°、45°、90°）的两种几何形状（即帽道和双圆顶）的纤维取向预测与LS-DYNA中开发的经验证的悬垂模拟结果进行比较来展示。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Transactions of The Canadian Society for Mechanical Engineering 工程技术-工程：机械

CiteScore

2.30

自引率

0.00%

发文量

审稿时长

5 months

期刊介绍： Published since 1972, Transactions of the Canadian Society for Mechanical Engineering is a quarterly journal that publishes comprehensive research articles and notes in the broad field of mechanical engineering. New advances in energy systems, biomechanics, engineering analysis and design, environmental engineering, materials technology, advanced manufacturing, mechatronics, MEMS, nanotechnology, thermo-fluids engineering, and transportation systems are featured.