Numerical simulation of textile flexibility testing

Abstract

A non‐linear numerical simulation of a standard procedure for textile flexibility testing is performed using discretised beam bending model. Geometric non‐linearity due to large deflections is traced using incremental method. Linear moment‐curvature response is assumed, as well as constant curvature of a finite element of the beam. Numerical procedure is incorporated into a PC programme producing graphical results for the deformed shape of the specimen, non‐linear load‐deflection diagrams and internal force distributions in deformed state. Finally, the method is applied to compute the flexural stiffness of textile materials from the data produced by the standard procedure for flexibility testing.

Woven fabric engineering by mathematical modeling and soft computing methods

“…FEM is considered useful for textiles because the complexity of the structure, the anisotropic properties of yarns and fabrics, and the interaction phenomena between yarns at the contact areas preclude the use of analytical methods. With FEM-based calculation models, processes can be understood with regard to the physical phenomena in depth and it is possible to change important parameters in a short time in order to improve textile-based constructions and also to generate new products [42]. From a structural point of view, woven fabrics are discontinuous in microstructure and therefore do not satisfy the continuity requirement in solid mechanics.…”