复合材料加筋壁板不同工艺固化变形试验及模拟

doi:10.19936/j.cnki.2096-8000.20220928.013

复合材料科学与工程 ›› 2022, Vol. 0 ›› Issue (9): 90-96.DOI: 10.19936/j.cnki.2096-8000.20220928.013

复合材料加筋壁板不同工艺固化变形试验及模拟

程文礼^1,2, 蒋婷³, 万喜伟^1,2, 刘晓东³, 叶宏军^1,2, 关志东³

1.中国航空制造技术研究院,北京 100024;
2.中航复合材料有限责任公司,北京 101300;
3.北京航空航天大学航空科学与工程学院,北京 100191

收稿日期:2021-10-13 出版日期:2022-09-28 发布日期:2022-09-27
作者简介:程文礼(1982-),男,硕士,高级工程师,主要从事复合材料成型方面的研究,13552018131@163.com。

Experimental and simulation analysis of different processes on curing deformation of stiffened composite panel

CHENG Wen-li^1,2, JIANG Ting³, WAN Xi-wei^1,2, LIU Xiao-dong³, YE Hong-jun^1,2, GUAN Zhi-dong³

1. China Aviation Manufacturing Technology Research Institute, Beijing 100024, China;
2. AVIC Composites Co., Ltd., Beijing 101300, China;
3. School of Aeronautical Science and Engineering, Beihang University, Beijing 100191, China

Received:2021-10-13 Online:2022-09-28 Published:2022-09-27

摘要/Abstract

摘要： 针对复合材料T形及U形加筋壁板结构,试验研究了不同成型工艺下的固化变形,并通过有限元模拟进行了变形预测,模拟结果及试验结果对比验证了模型的准确性;模拟研究了T形结构底板对变形的影响以及对T形及U形两种加筋结构的影响。结果表明:相对于共固化工艺,干筋湿蒙皮工艺有使结构向蒙皮一侧纵向翘曲的倾向,湿筋干蒙皮工艺影响效果则相反;对横向翘曲变形与扭转变形基本无影响;筋条底板设计会增大加筋壁板整体向筋条一侧的纵向翘曲变形,同时抑制横向翘曲变形;底板导致T形结构的不对称性,使结构产生了扭转变形,底板的设计不利于固化变形的抑制;U形加筋导致壁板底板刚度变大,纵向翘曲变形减小,结构的对称性使其不存在扭转变形,但增大了回弹影响,横向翘曲变形增大。

关键词: 复合材料, 加筋壁板结构, 成型工艺, 固化变形, 有限元分析

Abstract: Experiments were performed in order to study the influence of different processes on curing deformation of T-shaped and U-shaped stiffened composite panels, and the deformation prediction was carried out by the finite element simulation. The comparison between experimental and simulation results verifies the accuracy of the analytical model. Furthermore, influences of both the bottom plate of T-shaped stiffener on deformation and the structure of the T-shaped and U-shaped, stiffener, were investigated by the analytical model. The results show that compared with the co-curing process, the dry stiffen wet skin process has a tendency to warp the structure longitudinally to the side of the skin while the wet stiffen dry skin process has the opposite effect. The transverse warping deformation and the torsional deformation are hardly influenced by the different processes. The incorporation of the bottom plate of T-shaped stiffener increases the longitudinal warping deformation and restrains the transverse warping deformation. At the same time, torsional deformation occurs due to the asymmetry caused by that plate. The design of the bottom plate is not conducive to the suppression of curing deformation. The U-shaped panel has an asymmetry structure and increased rigidity, which generates no torsional deformation and reduced longitudinal warping deformation. However, the effect of springback is increased, and the transverse warping deformation becomes larger.

Key words: composite material, stiffened composite panel, forming process, curing deformation, finite element analysis

中图分类号:

TB332

程文礼, 蒋婷, 万喜伟, 刘晓东, 叶宏军, 关志东. 复合材料加筋壁板不同工艺固化变形试验及模拟[J]. 复合材料科学与工程, 2022, 0(9): 90-96.

CHENG Wen-li, JIANG Ting, WAN Xi-wei, LIU Xiao-dong, YE Hong-jun, GUAN Zhi-dong. Experimental and simulation analysis of different processes on curing deformation of stiffened composite panel[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(9): 90-96.

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复合材料加筋壁板不同工艺固化变形试验及模拟

Experimental and simulation analysis of different processes on curing deformation of stiffened composite panel

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