复合材料科学与工程Issue(4)：28-36,9.DOI:10.19936/j.cnki.2096-8000.20250428.004
基于椭圆张量叠加的剪切变形二维纤维织物渗透率预测模型
Permeability prediction model of two-dimensional fiber fabrics with shear deformation based on ellipse tensor superposition
摘要
Abstract
Permeability is a key parameter in the molding process of fiber composites,which is determined by the fiber structure.For the component with curvature,the fiber shear deformation is hard to avoid,which changes the fiber structure and affects the permeability.In order to study the changing trend of fiber in-plane permeability under shear deformation and to establish the prediction model of permeability main value and direction,two-dimen-sional radial flow experiments were used to test the permeability of woven fiber and non-crimp fiber.By ellipse ten-sor superposition and Kozeny-Carman equation,fiber redirection and fiber volume fraction were extracted as the main influencing factors of permeability.The factors were quantified to establish a permeability prediction model.By combining the theoretical model with the experimental data and several sets of literature data,the model parameters are further simplified,and the in-plane permeability prediction model is obtained which is widely applicable to or-thotropic woven fiber fabric and non-crimp fiber fabric.关键词
渗透率/剪切变形/预测模型/正交各向异性纤维/椭圆张量叠加/复合材料Key words
permeability/shear deformation/prediction model/orthotropic fiber/ellipse tensor superposition/composites引用本文复制引用
乐午阳,罗浩,吴医博,周何乐子,周华民..基于椭圆张量叠加的剪切变形二维纤维织物渗透率预测模型[J].复合材料科学与工程,2025,(4):28-36,9.基金项目
国家自然科学基金(52275336) （52275336）
