帽形桁条排布结构和胶接作用对碳纤维复合材料蒙皮固化变形影响的研究

doi:10.19936/j.cnki.2096-8000.20251028.016

复合材料科学与工程 ›› 2025, Vol. 0 ›› Issue (10): 105-113.DOI: 10.19936/j.cnki.2096-8000.20251028.016

帽形桁条排布结构和胶接作用对碳纤维复合材料蒙皮固化变形影响的研究

高翔^1,3, 胡建冬¹, 谢小林², 李文博^2*, 王子强², 安林⁴

1.航空工业江西洪都航空工业集团有限责任公司,南昌 330024;
2.南昌航空大学材料科学与工程学院,南昌 330063;
3.江西先进复合材料研发中心,南昌 330024;
4.青岛科技大学高分子科学与工程学院,青岛 266000

收稿日期:2024-10-16 出版日期:2025-10-28 发布日期:2025-12-02
通讯作者: 李文博(1988—),男,博士,讲师,研究方向为复合材料结构设计与仿真分析,645504616@qq.com。
作者简介:高翔(1979—),男,硕士,研究方向为碳纤维复合材料航空零部件制造。
基金资助:
江西省重点研发计划项目(20224BBE51049)

The investigation of composite material envelope curing deformation affected by layout structure and cementing

GAO Xiang^1,3, HU Jiandong¹, XIE Xiaolin², LI Wenbo^2*, WANG Ziqiang², AN Lin⁴

1. Jiangxi Hongdu Aviation Industry Co., Ltd., Nanchang 330024, China;
2. School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China;
3. Jiangxi Advanced Composite Materials Research and Development Center, Nanchang 330024, China;
4. School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266000, China

Received:2024-10-16 Online:2025-10-28 Published:2025-12-02

摘要/Abstract

摘要： 本文基于碳纤维复合材料蒙皮固化有限元模型,分析计算固化度、玻璃化转变温度、内应力和应变随时间的变化,进一步比较帽形桁条排布结构和胶接作用对复合材料蒙皮残余应力和固化变形的影响,并通过试验验证。结果表明,无桁条时复合材料蒙皮脱模后内应力达到49.1 MPa,当考虑桁条与蒙皮的胶接作用时,内应力增大到51.7 MPa。蒙皮长度和宽度方向沿中心收缩变形量为0.19~0.31 mm,蒙皮的翘曲变形受模具黏结和桁条胶接的共同作用,且桁条胶接作用影响更大。随着胶接面积减小,复合材料蒙皮翘曲变形从2.50 mm减小到1.19 mm,变形分布也更均匀。中间桁条对翘曲变形的影响大于外侧桁条的影响,残余应力集中也更明显。

关键词: 复合材料蒙皮, 固化变形, 帽形桁条, 有限元分析

Abstract: The design of stringer arrangement structure not only affects the mechanical properties of aircraft envelope, but also affects the curing deformation during forming. Therefore, it is very important to study the influence of stringer arrangement structure and cementing effect on aircraft envelope forming. In this paper, curing degree,glass transition temperature, internal stress, and strain changing over time have been analyzed based on simulation, more over comparing the influence of hat section stringer layout structure and cementing effect on residual internal stress and curing deformation of composite skin and verified by experiment. The results indicate that, the stress increases rapidly as composite material envelope cured. It will exceed 49.1 MPa after demoding, and further extend to 51.7 MPa while the cementing effect is taken into account. The curing deformation along the length and width change slightly, range from 0.19~0.31 mm, primarily influenced by cure shrinkage. However, the warping deformation of the envelope is influenced by the combined effect of mold bonding and stringer cementing, and the stringer cementing having a more significant impact. As the cementing area decreases, the warping deformation decreases from 2.50 mm to 1.19 mm, and the deformation distribution becomes more uniform. By contrast, the middle stringer has a greater impact on warping deformation and more pronounced stress concentration than outer stringer.

Key words: composite material envelope, curing deformation, hat section stringer, finite element analysis

中图分类号:

TB332

高翔, 胡建冬, 谢小林, 李文博, 王子强, 安林. 帽形桁条排布结构和胶接作用对碳纤维复合材料蒙皮固化变形影响的研究[J]. 复合材料科学与工程, 2025, 0(10): 105-113.

GAO Xiang, HU Jiandong, XIE Xiaolin, LI Wenbo, WANG Ziqiang, AN Lin. The investigation of composite material envelope curing deformation affected by layout structure and cementing[J]. COMPOSITES SCIENCE AND ENGINEERING, 2025, 0(10): 105-113.

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帽形桁条排布结构和胶接作用对碳纤维复合材料蒙皮固化变形影响的研究

The investigation of composite material envelope curing deformation affected by layout structure and cementing

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