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

作　　者：Binbin ZHANG Guangchang CHEN Bing WANG Jingran GE Mengran LI Zengfei LIU Jun LIANG 

机构地区：[1]Institute of Advanced Structure Technology,Beijing Institute of Technology,Beijing 100081,China [2]China Helicopter Research and Development Institute,Jingdezhen 333001,China [3]Center for Composite Materials and Structures,Harbin Institute of Technology,Harbin 150001,China [4]Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures,Beijing 100081,China

出　　处：《Chinese Journal of Aeronautics》2024年第11期242-253,共12页中国航空学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.U2241240,12172045,12221002 and 12202119)。

摘　　要：The failure behavior of the three-dimensional(3D)woven composites under tension are evaluated via experimentation and simulation.To accurately depict the intricate geometry of the woven composites,including the fluctuation of yarn paths,variations in cross-section,and resin distribution,the image-aided digital elements modeling approach is employed.Subsequently,to further assess both the tensile performance and damage response,a realistic voxel model is established with the integration of a well-suited progressive damage model.The obtained stress-strain curves align with the experimental results,and damage progression and underlying mechanisms involved are clearly revealed.Specifically,when subjected to warp tension,severe transverse damage and fiber bundle pull-out towards the warp yarns are observed within the curved section.Similarly,under weft loading,longitudinal damage is found to occur in the weft yarns,while the warp yarns suffer from transverse damage,leading to the formation of a smooth and brittle crack.Ultimately,the findings of this study hold potential to advance the engineering applications of the3D woven composites.

关 键 词：Mechanical properties Failure analysis Woven composites Realistic model Digital element methodology 

分 类 号：V258[一般工业技术—材料科学与工程]