2022 年 8 月
第 43 卷 第 8 期
Aug. 2022
Vol.43 No.8
推 进 技 术
JOURNA L O F PRO PU L S ION TECHNO LOGY
210459-1
2.5维机织复合材料细观几何模型及
刚度预测方法研究进展 *
崔海涛,郭俊华,张宏建,温卫东
(南京航空航天大学 能源与动力学院 工业和信息化部航空发动机热环境与结构重点实验室,江苏 南京 210016)
摘 要:从2.5维机织复合材料细观几何结构出发,讨论了织造及成型工艺对材料实际细观几何结
构的影响,并分析了不同纱线截面及路径假设所建立代表性体积胞的优缺点。对考虑工艺因素的代表性
体积胞是否具有统一性和体素单元法建模的合理性做出对比分析。在代表性体积胞的基础上,重点讨论
了2.5维机织复合材料刚度的数值预测方法,并将其与刚度的理论预测方法作了简单对比。基于刚度的
数值预测方法,分析了各种机织参数对刚度系数的影响,并且对比了不同代表性体积胞模型的应力场。
此外,还讨论了2.5维机织复合材料叶片的建模分析技术与刚度设计方法。最后,指出了当前2.5维机织
复合材料细观建模及刚度预测方法存在的问题与不足,并且对其力学性能研究的发展趋势进行了展望。
关键词:复合材料;细观结构;几何模型;刚度模型;叶片结构
中图分类号:TB332;V258 文献标识码:A 文章编号:1001-4055(2022)08-210459-20
DOI:10.13675/j.cnki. tjjs. 210459
Research Progress on Meso-Geometric Models and Stiffness
Prediction Methods of 2.5D Woven Composites
CUI Hai-tao,GUO Jun-hua,ZHANG Hong-jian,WEN Wei-dong
(Aero-Engine Thermal Environment and Structure Key Laboratory of Ministry of Industry and Information Technology,
College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
Abstract:The effects of weaving and molding processes on the actual meso-geometry of the material are
discussed in terms of the meso-geometry of 2.5D woven composites,and the advantages/disadvantages of repre⁃
sentative volume cells established by different assumptions of yarn cross-section and path are analyzed. A com⁃
parative analysis is made on whether the representative volume cells considering process factors are uniform and
the rationality of the voxel cell method of modeling. Based on the representative volume cells,the numerical pre⁃
diction method of the stiffness of 2.5D woven composites is focused on and is briefly compared with the theoretical
prediction method. Based on the numerical prediction method of stiffness,the effects of various weaving parame⁃
ters on the stiffness coefficients are analyzed,and the stress fields of different representative volume cell models
are compared. In addition,the modeling analysis techniques and stiffness design methods for 2.5D woven compos⁃
ite blades are discussed. Finally,the problems and shortcomings of the current meso-scale modeling and stiffness
prediction methods for 2.5D woven composites are pointed out,and the development trend of their mechanical
* 收稿日期:2021-07-13;修订日期:2021-09-25。
基金项目:国家科技重大专项(2017-IV-0007-0044);国家自然科学基金(52175142)。
通讯作者:崔海涛,博士,教授,研究领域为微动疲劳与复合材料力学。
引用格式:崔海涛,郭俊华,张宏建,等. 2.5维机织复合材料细观几何模型及刚度预测方法研究进展[J]. 推进技术,2022,
43(8):210459. (CUI Hai-tao,GUO Jun-hua,ZHANG Hong-jian,et al. Research Progress on Meso-Geometric
Models and Stiffness Prediction Methods of 2.5D Woven Composites[J]. Journal of Propulsion Technology,2022,43
(8):210459.)