Failure analysis of 3D woven composites under tension based on realistic model

• DOI: 10.1016/j.cja.2024.07.032
• Publication Date: 2024-07-30T17:04:47Z
• Authors: Binbin ZHANG; Guangchang CHEN; Bing WANG; Jingran GE; Mengran LI; Zengfei LIU; Jun LIANG
• Keywords: Tension (geology); Brittleness; Damage mechanics; Micromechanics; Digital image correlation; Woven fabric

The failure behavior of the three-dimensional (3D) woven composites under tension are evaluated via experimentation and simulation. To accurately depict intricate geometry composites, including fluctuation yarn paths, variations in cross-section, resin distribution, image-aided digital elements modeling approach is employed. Subsequently, to further assess both tensile performance damage response, a realistic voxel model established with integration well-suited progressive model. obtained stress–strain curves align experimental results, progression underlying mechanisms involved clearly revealed. Specifically, when subjected warp tension, severe transverse fiber bundle pull-out towards yarns observed within curved section. Similarly, weft loading, longitudinal found occur yarns, while suffer from damage, leading formation smooth brittle crack. Ultimately, findings this study hold potential advance engineering applications 3D composites.