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

doi:10.19936/j.cnki.2096-8000.20250428.004

Abstract

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

CLC Number:

TB332

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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