玻璃钢/复合材料 ›› 2019, Vol. 0 ›› Issue (7): 69-72.

• 应用研究 • 上一篇    下一篇

蜂窝夹芯结构预埋玻璃纤维板挤压强度研究

赵霞军, 娄程飞*, 张伟   

  1. 中国特种飞行器研究所,荆门448035
  • 收稿日期:2018-10-22 出版日期:2019-07-28 发布日期:2019-07-28
  • 通讯作者: 娄程飞(1985-),男, 主要从事飞机结构强度设计方面的研究,longteng6688@126.com。
  • 作者简介:赵霞军(1981-),男,硕士, 主要从事飞机结构强度设计方面的研究。
  • 基金资助:
    工信部民机科研资助项目(MJ-2014-F-09)

STUDY ON BEARING LOAD OF GLASS FIBREBOARD PRE-BURIED BY HONEYCOMB SANDWICH STRUCTURE

ZHAO Xia-jun, LOU Cheng-fei*, ZHANG Wei   

  1. Avic Special Vehicle Research Institute, Jingmen 448035, China
  • Received:2018-10-22 Online:2019-07-28 Published:2019-07-28

摘要: 复合材料蜂窝夹芯结构是复合材料典型的结构形式,但蜂窝夹芯结构接头连接处是结构中的薄弱部位。本文针对复合材料碳纤维面板、Nomex蜂窝的夹芯结构,采用预埋玻璃纤维板作为传力接头,研究夹芯结构接头处的挤压性能。研究结果表明,预埋玻璃纤维板能够有效提高夹芯结构的挤压强度,挤压载荷随着玻璃纤维板直径的提高呈线性增加。无损检测发现玻璃纤维板和面板/蜂窝剥离,表明玻璃纤维板、黏结剂是载荷传递到周围蜂窝和面板的介质。实际使用中要注意连接件和玻璃纤维板直径的匹配关系,一般对于螺栓NAS6204-8(螺栓直径为4.8 mm),玻璃纤维板直径为20 mm是合适的,对于螺栓NAS6304-8(螺栓直径为6.4 mm),玻璃纤维板直径为30 mm是合适的。

关键词: 蜂窝夹芯, 预埋玻璃纤维板, 挤压强度, 匹配

Abstract: Honeycomb sandwich structure is a typical composite structure, but the joints and joints of honeycomb sandwich structure are the weak points in the structure. In this paper, for the sandwich structure of carbon fiber panel and Nomex honeycomb, the embedded glass fibreboard plate is used as the force transmission joint to study the bearing performance at the joint of the sandwich structure. The results show that the pre-embedded glass fibreboard can effectively improve the bearing strength of the sandwich structure, and the bearing load increases linearly with the increase of glass fibreboard diameter. Non-destructive testing found the the peeling of glass fibreboard with the panel/honeycomb, indicating that the glass fibreboard and the binder are the medium through which the load is transmitted to the surrounding honeycomb and panel. Attention should be paid to the matching relation between the connecting piece and the embedded part in actual use. Generally, it is suitable for the embedded part of bolt NAS6303-8 (diameter of bolt 4.8 mm) with glass fibreboard diameter of 20 mm, and it is suitable for the embedded part of bolt NAS6304-8 (diameter of bolt 6.4 mm) with glass fibreboard diameter of 30 mm.

Key words: sandwich structure, embedded glass fibreboard, bearing matching

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