Determining the initial configuration and characterizing the mechanical properties of 3D angle-interlock fabrics using finite element simulation

Abstract

A finite element simulation approach to the mechanical behaviour of 3D angle-interlock fabrics at the scale of their internal components, using an implicit scheme, is presented in this paper. Based on the determination of the static equilibrium of assemblies of fibres, this approach is used first to find the unknown initial configuration of a unit cell of angle-interlock fabric, by implementing an original method to gradually separate initially inter-penetrating yarns. This method, only based on the weaving pattern, does not require any geometrical pre-processor. Various loading cases can then be simulated to characterize the non-linear behaviour of such fabrics. Applications to the determination of the initial configuration of the unit cell of a typical example of a 5-layer angle-interlock fabric, and to the simulation of a transverse compression test and a forming test are presented.

Measuring yarn deformations induced by the manufacturing process of woven composites

“…Furthermore, the proposed approach could be employed along some textile forming models. In particular, with those employing a reduced number of "simple" parameters (e.g., not employing textile pre-processors [33]). Then, the impact of these parameters on the final as-woven configuration could be expressed using the measured strain patterns.…”

“…These geometries can be obtained through simulations of the textile process, in which yarns are modeled either as "solid" (or "tubular") entities [21][22][23][24][25][26] or as "multi-filament" ("multi-chain") entities [19,[27][28][29][30][31][32][33]. These models can be initialized via some ad hoc techniques (e.g., pre-tensioning using a fictitious thermal expansion) or just by accessing the weaving architecture [33]. Alternatively, this configuration can be directly extracted from high resolution CT (micro-CT) [34,35], so as to account for the specificities of the analyzed material.…”

Investigation of the classification and properties of three-dimensional textile fabrics

“…The axis shape is regarded as regular shapes, such as arc, sinusoid, and irregular shapes. 26,35,36 The volume of the curved fiber tows can be obtained by formula (5)…”

Finite element simulation of a steel cable - rubber composite under bending loading: Influence of rubber penetration on the stress distribution in wires

“…The use of proximity zones to define contact areas enables to account for contact friction between wires while preserving an efficient computation cost. Complete descriptions of both beam kinematic and contact friction definition are given elsewhere [15], as well as some applications of Multifil code [16,17].…”