Abstract

The interface in a composite plays an important role in enhancing compatibility of the fibers and the matrix. This paper models the AFP process at meso- and micro-scale using finite element and molecular dynamics methods. Furthermore, the molecular model of the interface is established using molecular dynamics method. Interface adsorbability and resin fluidity along the interface are, respectively, evaluated under different processing parameters using adsorption energy and diffusion coefficient. Finally, the use of gray correlation analysis method reveals the correlation between processing parameters and interface mechanical parameters. The results are verified by measurements of interlaminar shear strength and flexural strength.

摘要

复合材料中的界面在增强纤维和基体的相容性方面起着重要作用。本文使用有限元和分子动力学方法对中尺度和微观尺度的 AFP 过程进行建模。此外，利用分子动力学方法建立了界面的分子模型。使用吸附能和扩散系数分别在不同的工艺参数下评估界面吸附性和沿界面的树脂流动性。最后，利用灰色关联分析方法揭示了加工参数与界面力学参数之间的相关性。结果通过层间剪切强度和弯曲强度的测量得到验证。