含衬经的三维机织复合材料参数化建模方法与力学行为  

Parametric modeling method and mechanical behavior of 3D woven composites with warp insertion

作　　者：郭颖钊 崔海涛[1] 温卫东[1] 张宏建[1] 赵思钰 鞠宏奎 郭俊华 GUO Yingzhao;CUI Haitao;WEN Weidong;ZHANG Hongjian;ZHAO Siyu;JU Hongkui;GUO Junhua(College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学能源与动力学院,南京210016

出　　处：《航空动力学报》2024年第11期86-100,共15页Journal of Aerospace Power

基　　金：国家科技重大专项(2017-Ⅳ-0007-0044);国家自然科学基金(52175142)。

摘　　要：为了能够更为准确地描述机织复合材料的细观结构和力学行为,建立了一种适用于含衬经的三维机织复合材料的参数化模型构建方法,讨论了几何模型内部各参数之间的等式约束关系,并以此建立了几何约束模型以实现对几何模型的参数化描述。在几何约束模型的基础上,重点讨论了参数化模型的建立方法,以输入参数建立了几何模型与实际结构的映射关系,提高了几何模型对实际结构的还原程度,对材料的分析与设计具有指导意义。采用渐进损伤模型预测了三维机织复合材料的经向强度,并与试验结果进行对比。在拉伸载荷作用下,经纱和接结纱以纵向断裂失效为主,纬纱以横向开裂失效为主,富树脂区的失效模式为拉伸断裂,经向强度预测值为853.6 MPa,相对误差为2.3%,与试验结果基本吻合。To describe the microstructure and mechanical behavior of woven composites more accurately,a parametric model construction method for 3D woven composites with warp insertion was established.The equality constraints among the parameters in the geometric model were investigated,and the geometric constraint model was developed to realize the parametric description of the geometric model.Based on the geometric constraint model,the construction method of the parametric model was discussed,and the mapping relationship between the geometric model and the actual structure was established by input parameters,which improved the reduction degree of the geometric model to the actual structure,providing a guidance for material analysis and design.The progressive damage model was applied to predict the strength of 3D woven composites in the warp direction,and the prediction results were compared with the experimental results.Under the tensile load,the failure mode of the warp and binder yarn was mainly longitudinal fracture,the failure mode of the weft yarn was transverse fracture,and the failure mode of the resin-rich region was tensile fracture.The predicted strength of the material in the warp direction was 853.6 MPa,with a relative error of 2.3%,which was basically consistent with the experimental results.

关 键 词：3D机织复合材料 参数化模型 渐进损伤模型 强度预测 有限元仿真 

分 类 号：V258[一般工业技术—材料科学与工程] TB332[航空宇航科学与技术—航空宇航制造工程]