蜂窝夹层结构中新型半埋件设计及其拉拔性能研究

doi:10.19936/j.cnki.2096-8000.20220328.031

复合材料科学与工程 ›› 2023, Vol. 0 ›› Issue (1): 26-33.DOI: 10.19936/j.cnki.2096-8000.20220328.031

蜂窝夹层结构中新型半埋件设计及其拉拔性能研究

崔浩南¹, 文立伟^1*, 赵聪²

1.南京航空航天大学材料科学与技术学院,南京210016;
2.南京航空航天大学机电学院,南京210016

收稿日期:2021-12-01 出版日期:2023-01-28 发布日期:2023-02-24
通讯作者: 文立伟(1970—),男,博士,副教授,主要从事先进复合材料自动化成型技术方面的研究,wenliwei@nuaa.edu.cn。
作者简介:崔浩南(1997—),男,硕士研究生,主要从事复合材料方面的研究。
基金资助:
国防基础科研计划(JCKY2019204A001);大飞机材料专项(JPPT-KF2019-4-1a)

Study on structural design and drawing performance of new partially potted inserts in honeycomb sandwich structure

CUI Haonan¹, WEN Liwei^1*, ZHAO Cong²

1. School of Materials Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
2. School of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Received:2021-12-01 Online:2023-01-28 Published:2023-02-24

摘要/Abstract

摘要： 传统蜂窝夹层板后埋件采用工字形结构,需要手动注胶至胶液填满蜂窝芯格,精度低、效率低,且埋件-胶液整体重量较大。出于减重和适应自动化装填的目的,设计了新型帽形半埋件结构,搭建了埋件自动化装填平台,完成了埋件自动化组装工艺验证;利用工业CT分析了不同流胶口数量的胶液填充状态;借助拉伸试验机对不同数量流胶口、不同注胶量的新型半埋件及胶液填充100%的传统工字形全埋件做垂直于面板的拉伸试验。结果表明:新型半埋件侧面流胶口的数量越多,胶液填充越均匀,拉伸性能越好;且注胶量的增大能显著提高其拉拔承载力,相应的埋件-胶液总重也会迅速提高,但当注胶量过大时,过多胶液会流至蜂窝底部,拉拔承载力增幅较小。与传统工字形全埋件相比,新型帽形埋件的最大拉拔承载力有所降低,但降幅较小,其中G08-P04只降低了9.5%,同时,结构质量却能减少65.2%,更加适用于低承载、轻质结构板的要求。所做工作可以为半埋件减重设计及自动化组装提供参考。

关键词: 蜂窝夹层板, 后埋工艺, 半埋件, 拉拔承载力, 自动化组装, 复合材料

Abstract: The structure of traditional inserts in honeycomb sandwich panels are usually I-shaped, which requires manual injection of potting materials until the potting materials fills honeycomb core, resulting in low accuracy, low efficiency and large overall weight. In order to reduce weight and adapt to automatic assembly, a new hat-shaped partially potted insert was designed, an automatic assembly platform of inserts was built, and the process verification of automatic assembly of inserts was completed. The filling state of potting materials with different numbers of flow orifices was analyzed by industrial CT system. With the help of tensile testing machine, the tensile tests perpendicular to the panel were carried out on the new hat-shaped partially potted inserts with different numbers of flow orifices and different amounts of potting materials injection and the traditional I-shaped full potted inserts filled with 100% potting materials. The results show that the more the number of flow orifices on the side of the new hat-shaped partially potted insert, the more uniform the distribution of potting materials in the honeycomb core, and the better the tensile properties of the inserts. And the increase of the amount of potting materials injection can significantly improve the drawing capacity of the inserts, and the corresponding total mass of the structure will also improve rapidly. However, when the amount of potting materials is too large, the excess potting materials will flow to the bottom of the honeycomb core, so that the increase of drawing capacity is not obvious. Compared with the traditional I-shaped full potted inserts, the maximum drawing capacity of the new hat-shaped partially potted inserts is reduced, but the reduction is small, in which the G08-P04 is only reduced by 9.5%, while the structural weight can be reduced by 65.2%, which is more suitable for the requirements of low-load and light-weight structural plate. The work done in this paper can provide reference for weight reduction design and automatic assembly of inserts in honeycomb sandwich panels.

Key words: honeycomb sandwich panels, potting process, partially potted inserts, drawing capacity, automatic assembly, composites

中图分类号:

TB332

崔浩南, 文立伟, 赵聪. 蜂窝夹层结构中新型半埋件设计及其拉拔性能研究[J]. 复合材料科学与工程, 2023, 0(1): 26-33.

CUI Haonan, WEN Liwei, ZHAO Cong. Study on structural design and drawing performance of new partially potted inserts in honeycomb sandwich structure[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(1): 26-33.

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蜂窝夹层结构中新型半埋件设计及其拉拔性能研究

Study on structural design and drawing performance of new partially potted inserts in honeycomb sandwich structure

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