Experimental and numerical investigation of mechanical behavior of plain woven CFRP composites subjected to three-point bending

• DOI: 10.1016/j.cja.2023.04.028
• Publication Date: 2023-05-03T18:56:28Z
• Authors: Qiaoli ZHAO; Yuliang HOU; Weihan WANG; Yutong LIU; Cheng LI
• Keywords: Microscale chemistry; Homogenization; Micromechanics; Delamination; Representative elementary volume; Plain weave; Woven fabric

The mechanical behavior of plain woven Carbon Fiber-Reinforced Polymer (CFRP) composites under Three-Point Bending (TPB) is investigated via experimental and numerical approaches. Multiscale models, including microscale, mesoscale macroscale have been developed to characterize the TPB strength damages. Thereinto, Representative Volume Elements (RVEs) microscale structures are established determine effective properties carbon-fiber yarn CFRP composites, respectively. Aimed at accurately efficiently predicting behavior, an Equivalent Cross-Ply Laminate (ECPL) cell proposed simplify inherent architecture, subcell computed using a local homogenization approach. model specimen constructed by topology structure ECPL cells predict behavior. experiments performed validate multiscale models. Both results reveal that delamination mainly appears in top bottom interfaces laminates. And matrix cracking identified as significant damage modes during process. Finally, quasi-static dynamic behaviors discussed comparing low-velocity impact (LVI) simulations.