变刚度复合材料加筋壁板的压缩试验及仿真研究
Compression Test and Simulation Study of Curvilinear Fiber Composite Stiffened Laminates
原崇新 1潘杰 1屈蒙 2谭源 2董青海 1党磊 1李志远2
作者信息
- 1. 中国商飞北京民用飞机技术研究中心,北京 102211
- 2. 上海飞机制造有限公司,上海 201324
- 折叠
摘要
受益于自动铺丝等自动化制造技术,曲线纤维复合材料的工程应用已经成为现实,但曲线纤维复合材料在加筋壁板上的性能优势仍缺乏相应的试验数据验证.本文对比分析了直线纤维与优化后的曲线纤维复合材料加筋壁板的压缩性能,采用了自动铺丝工艺分别制造了直线纤维面板和曲线纤维面板,并与固化好的工形长桁进行二次固化,然后对两种类型的试验件进行压缩性能测试.试验结果表明,直线加筋壁板复合材料的压缩载荷为116.27kN,而优化后曲线纤维加筋壁板的压缩载荷为151.62kN.对两种形式的加筋壁板进行了有限元仿真,并与试验结果进行对比.仿真结果表明,直线纤维加筋壁板因为较早地出现了面板屈曲并随之与工形长桁脱黏,最后长桁被压溃而导致整个结构失效.而曲线纤维加筋壁板因为屈曲强度较高,在临近失效时才发生脱黏,并导致最终的压溃.
Abstract
The curved fiber composites can be applied in the industry thanks to the automated fiber placement,however,the benefit of the curved fiber stiffened laminates has not been proved adequately by experimental data.The compression behavior of straight fiber stiffened laminates were compared with the curved fiber stiffened laminates,the skins were manufactured with the automated fiber placement processing,and then they were cocured with the cured I-shaped stringers,finally the two types of stiffened laminates were tested under compression.Results show that the straight fiber stiffened laminates failed at an average compressive load of 116.27kN,compared with a load of 151.62kN of the curved ones.It is found that the debonding firstly happens as the buckling of the skin in the case of straight fibers,then the stringer failed and it leads to the final failure of the whole structure.The curved fiber stiffened laminates show a similar behavior that a debonding exist and it leads to the stringer's crush.However,the debonding happened at a high compression load as the curved fiber stiffened laminates has a much higher buckling load.
关键词
曲线纤维复合材料/加筋壁板/压缩/脱胶/工形长桁Key words
curved fiber composites/stiffened laminates/compression/debonding/I-shaped stringer引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据