复合材料科学与工程 ›› 2022, Vol. 0 ›› Issue (11): 20-27.DOI: 10.19936/j.cnki.2096-8000.20221128.003

• 基础研究 • 上一篇    下一篇

平纹编织面板蜂窝夹芯结构平拉性能研究

孙毅刚1, 马瑞云1, 王轩1*, 程吉1, 周春苹2   

  1. 1.中国民航大学 航空工程学院,天津300300;
    2.航空工业济南特种结构研究所 高性能电磁窗航空科技重点实验室,济南250023
  • 收稿日期:2021-10-22 出版日期:2022-11-28 发布日期:2022-12-30
  • 通讯作者: 王轩(1982-),男,博士,副教授,主要从事复合材料结构服役行为与维修方面的研究,xuwangaero@163.com。
  • 作者简介:孙毅刚(1963-),男,博士,教授,主要从事飞行数据在航空器性能监控与维修方面的研究。
  • 基金资助:
    航空科学基金(ASFC-201918067011);天津市科技计划项目(20YDTPJC00380)

Study on the flatwise tensile properties of honeycomb sandwich structure with plain weave faceplate

SUN Yi-gang1, MA Rui-yun1, WANG Xuan1*, CHENG Ji1, ZHOU Chun-ping2   

  1. 1. College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China;
    2. Aviation Key Lab of Science and Technology on High Performance Electromagnetic Windows, Research Institute for Special Structure of Aeronautical Composite, AVIC, Jinan 250023, China
  • Received:2021-10-22 Online:2022-11-28 Published:2022-12-30

摘要: 为了研究平纹编织面板蜂窝夹芯结构的平拉性能,利用有限元分析软件ABAQUS建立基于渐进损伤失效分析方法的夹芯结构细节模型,选用内聚力模型模拟面板与芯子间的胶层,运用FORTRAN语言编写描述失效和退化准则的USDFLD子程序,对夹芯结构的平拉性能进行预测。结果表明:预测得到的平拉强度和破坏模式与试验结果一致,验证了所建模型正确;面板各层间和面芯之间胶层没有出现损伤;蜂窝芯以蜂窝壁纵向破坏为主,蜂窝芯中部首先出现损伤,随后损伤向两侧扩展,最终整个蜂窝芯中部裂开导致结构失效;面板各层间和面芯之间胶层的剥离强度要高于蜂窝芯厚度方向上的拉伸强度;整个夹芯结构的变形以蜂窝芯厚度方向上的变形为主。

关键词: 蜂窝夹芯结构, 平纹编织, 渐进损伤分析, 平拉性能, 破坏模式

Abstract: To investigate the flatwise tensile strength of the plain weave panels honeycomb sandwich structure, ABAQUS was used to create a detailed model of the sandwich structure based on the progressive damage failure analysis methodology. The cohesion model was selected to simulate the adhesive layer between the faceplate and the honeycomb core. FORTRAN language was applied to write USDFLD subroutines describing failure and degradation criteria, which predict the flatwise tensile properties of the sandwich structure. The results show that the predicted flatwise tensile strength and failure mode are consistent with the test results, checking whether the model is correct. There is no damage between the layers of the faceplate and the adhesive layer between the faceplate-core. The honeycomb damage is mainly caused by longitudinal damage to the honeycomb wall. Damage occurs first in the middle of the core wall, then the damage spreads to both sides. Finally, the middle part of the whole honeycomb core cracks and the structure fails. The peel strengths of the layers of the faceplate and the adhesive layer between the faceplate-core are higher than the tensile strength in the longitudinal direction of the core. The deformation of the entire sandwich structure is dominated by the deformation in the longitudinal direction of the core.

Key words: honeycomb sandwich structure, plain weave, progressive damage analysis, flatwise tensile properties, failure mode

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