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

doi:10.19936/j.cnki.2096-8000.20250428.004

复合材料科学与工程 ›› 2025, Vol. 0 ›› Issue (4): 28-36.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

乐午阳¹, 罗浩², 吴医博², 周何乐子^1*, 周华民¹

1.华中科技大学材料科学与工程学院材料成形与模具技术全国重点实验室,武汉 430074;
2.洛阳船舶材料研究所,洛阳 471003

收稿日期:2024-01-22 出版日期:2025-04-28 发布日期:2025-06-03
通讯作者: 周何乐子(1990—),女,博士,副教授,主要从事连续纤维复合材料成型方面的研究,helezizhou@hust.edu.cn。
作者简介:乐午阳(2000—),女,硕士研究生,主要从事液体成型工艺渗透率方面的研究。
基金资助:
国家自然科学基金(52275336)

Permeability prediction model of two-dimensional fiber fabrics with shear deformation based on ellipse tensor superposition

YUE Wuyang¹, LUO Hao², WU Yibo², ZHOU-HE Lezi^1*, ZHOU Huamin¹

1. State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;
2. Luoyang Ship Material Research Institute, Luoyang 471003, China

Received:2024-01-22 Online:2025-04-28 Published:2025-06-03

摘要/Abstract

摘要： 渗透率是纤维复合材料成型过程中的关键参数,由纤维结构决定。对于具有一定曲率的构件,纤维剪切变形难以避免,从而导致纤维结构改变,影响渗透率。为研究剪切变形下的纤维面内渗透率变化规律,建立渗透率主值和方向的预测模型,采用二维径向流动实验对编织纤维布和无屈曲纤维布进行渗透率测试;通过椭圆张量叠加和Kozeny-Carman方程分别提取纤维重定向和纤维体积分数作为渗透率的主要影响因素,并对其进行量化,建立渗透率预测模型;将理论模型与实验数据及多组文献数据结合,进一步简化了模型参数,得到了可广泛适用于二维正交各向异性机织纤维布和无屈曲纤维布的面内渗透率预测模型。

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

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-dimensional radial flow experiments were used to test the permeability of woven fiber and non-crimp fiber. By ellipse tensor 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 orthotropic woven fiber fabric and non-crimp fiber fabric.

Key words: permeability, shear deformation, prediction model, orthotropic fiber, ellipse tensor superposition, composites

中图分类号:

TB332

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, 0(4): 28-36.

YUE Wuyang, LUO Hao, WU Yibo, ZHOU-HE Lezi, ZHOU Huamin. Permeability prediction model of two-dimensional fiber fabrics with shear deformation based on ellipse tensor superposition[J]. COMPOSITES SCIENCE AND ENGINEERING, 2025, 0(4): 28-36.

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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

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