Influence of structural parameters at microscale on the fiber reinforcement

Abstract

In this paper, a random configuration model for fiber arrangement is proposed and implemented in a computer code. This development enables the investigation of the effect of the random arrangements of the fibers inside the tow on the permeability and the flow properties. Four parameters are considered including three microstructural parameters: side length of the domain L, variation of radii Δ r, minimum interfiber distance δmin, and one macro parameter: porosity ɛ. Finite element method is performed for the transverse flow of porous media with random arrangements of fibers. Morris method for global sensitivity analysis is used to study the influence of four parameters. The results have shown that the porosity ɛ has the most obvious influence on the fiber reinforcement permeability.

A study on resin infusion and effects of reinforcement structure at dual scales by a quasi-realistic numerical simulation method

“…In this article, we worked on this code and refined it to produce quasi-realistic dualscales models both 2D and 3D. 13,14 Random fiber configuration codes…”

“…¼ 2 here as the initial value. É is a transition parameter to connect equations (10) and (11). Surface tension coefficient (N/m) bases on and at the same time according to the equation (12)…”

“…Li C. et al. 11 continue to study the influence of the variation of the fiber size on the permeability. Nevertheless, these works only care for saturated flow in the fibers intra tow at a square domain, but not at meso dual-scale.…”

“…For preforms with random arrangement, Chen and Papathanasiou 10 worked on Monte Carlo method to produce random fiber arrangement and detect the influence of the arrangement on permeability. Li C. et al 11 continue to study the influence of the variation of the fiber size on the permeability. Nevertheless, these works only care for saturated flow in the fibers intra tow at a square domain, but not at meso dual-scale.…”

Development of Modified Arcan Fixture for biaxial loading response of fiber-reinforced composites

“…The problems of engineering and mathematical physics can be solved by a numerical method, the finite element method (FEM), with subdividing a large system into smaller, simpler parts. Typical problem remains in many areas such as structural analysis, heat transfer, fluid flow, electromagnetic potential, field of optics and biomedical engineering [8,13,[17][18][19][20]. Many models were implemented to study behavior of FRPs.…”