三维四向/五向编织扩张段的多尺度有限元力学性能分析  

Multiscale Finite Element Mechanical Performance Analysis on 3D and Four-Five Directional Braiding Expansion Section

作　　者：袁志超 孙正 黄浩 张奕珂 欧阳林志 李昊昊 王尧尧 YUAN Zhichao;SUN Zheng;HUANG Hao;ZHANG Yike;OUYANG Linzhi;LI Haohao;WANG Yaoyao(College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]南京航空航天大学机电学院,江苏南京210016 [2]北京理工大学机械与车辆学院,北京100081

出　　处：《机械制造与自动化》2023年第5期74-77,共4页Machine Building & Automation

摘　　要：针对扩张段存在质量较高以及与壳体连接处性能薄弱等不足,提出一种复合材料三维编织扩张段分区成形方案。针对扩张段不同区域不同的性能要求,通过旋转三维编织柔性增减纱实现多种性能结构分区成形,改善扩张段轻量化性能。基于ABAQUS分析软件,选取扩张段模型不同区域结构三维四向/五向单胞模型进行性能分析。结果显示:三维五向单胞相比三维四向单胞在第五向纤维方向的弹性模量提升至160%,能够有效提高单胞轴向结构刚度,改善编织扩张段层间性能。To overcome the deficiency of present expansion section like high weight and weak performance at the joint with the shell,this paper proposes a divided-area forming method of composite expansion section.In the light of the different performance requirements of different areas of the expansion section,the divided-area forming of structure with various properties is realized by rotating 3D braiding flexible yarn increasing and reducing to improve the lightweight performance of the expansion section.Based on ABAQUS analysis software,3D four-directional and five-directional unit cell models in different regions of the expansion section model are selected for performance analysis.The results show that in comparison with 3D four-directional unit cell,the elastic modulus of 3D five-directional unit cell in the fifth fiber direction increases to 160%(from 11.92GPa to 19.08GPa),which can effectively improve the stiffness of unicellular axial structure and the interlayer performance of braided expansion section.

关 键 词：扩张段 三维编织 分区成形 单胞模型 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]