Meso-level bending/reverse-bending analysis of dry woven fabrics: Observing an irreversible behavior during forming. (15th February 2022)

• Record Type: Journal Article
• Authors: Sourki, R.; Crawford, B.; Vaziri, R.; Milani, A.S.
• Is Part Of: Composite structures. Volume 282(2022)
• Publication Date: 2022-02-15
• Subjects: Composite fabrics -- Bending/reverse-bending -- Energy dissipation -- Meso-level modeling; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2021.115124
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: During the design and simulation of woven fabric structures and forming processes, the loading/unloading regimes are often neglected. The overlooked strain history and associated irreversible behavior may have non-negligible impacts on product performance. In this article, it is first experimentally shown that local bending/reverse-bending can occur during a typical hemispherical forming process, and therefore critical mechanical properties such as the fabric bending rigidity can vary non-linearly during deformation, accompanied by a hysteresis. The magnitude of this variation is a function of multiple parameters such as part geometry, fabric crimp, friction, the twist of fibers, among others. A basic meso-level modeling framework has been adopted here to predict the above cyclic bending response of a typical dry glass/polypropylene plain weave. The predicted irreversibility is validated with experiments, using both single-layer and double-layer fabric layouts of different sizes, as well as single yarns.