复合材料科学与工程Issue(10)：97-104,8.DOI:10.19936/j.cnki.2096-8000.20251028.015
三维编织复合材料帽形单加筋壁板弯曲性能研究
Study on the bending performance of three-dimensional braided composite hat-stiffened single-ribbed panels
罗惠 1李倩倩 1李炜2
作者信息
- 1. 东华大学 纺织学院,上海 201620||东华大学 民用航空复合材料协同创新中心,上海 201620
- 2. 东华大学 纺织学院,上海 201620||东华大学 民用航空复合材料协同创新中心,上海 201620||产业用纺织品教育部工程研究中心,上海 201620
- 折叠
摘要
Abstract
Preforms of hat-stiffened single-ribbed structures with skin-to-stringer braiding row ratios of 3∶5,4∶4,5∶3,and6∶2 were fabricated using three-dimensional(3D)braiding technology.It isthen cured by the vac-uum assisted resin transfer molding(VARTM)process.The influence of variations in the number of braiding rows between the skin and the stringer on the bending performance and failure process of 3D braided hat-stiffened single-ribbed panels is analyzed through four-point bending tests combined with three-dimensional digital image correlation(3D-DIC).The results indicate that the panel with a braiding row ratio of 4∶4 exhibits the highest load-bearing ca-pacity,while the panel with a ratio of 3∶5 demonstrates the best resistance to bending deformation.During bending,stress concentration and cracking occur at the interface between the web and flange of the 3D braided hat-stiffened single-ribbed panel.The cracking at this junction has no significant impact on the overall load-bearing capacity,and the reduction in load-bearing capacity of the ribbed panel is primarily caused by brittle fracture of the skin.These findings provide a reference for the structural design of 3D braided hat-stiffened single-ribbed panels.关键词
三维编织复合材料/加筋壁板/帽形筋条/四点弯曲/三维数字图像相关Key words
three-dimensional braided composites/stiffened panel/hat-shaped stiffener/four-point bending/3D-DIC(three-dimensional digital image correlation)引用本文复制引用
罗惠,李倩倩,李炜..三维编织复合材料帽形单加筋壁板弯曲性能研究[J].复合材料科学与工程,2025,(10):97-104,8.
