航空学报 > 2013, Vol. 34 Issue (10): 2357-2363   doi: 10.7527/S1000-6893.2013.0166

复合材料增压舱双圆截面交点连接设计分析

钟小丹1, 陈普会1, 刘利阳2, 王进2   

  1. 1. 南京航空航天大学 飞行器先进设计技术国防重点学科实验室, 江苏 南京 210016;
    2. 沈阳飞机设计研究所, 辽宁 沈阳 110035
  • 收稿日期:2012-11-29 修回日期:2013-03-11 出版日期:2013-10-25 发布日期:2013-03-19
  • 通讯作者: 陈普会,Tel.: 025-84896256 E-mail: phchen@nuaa.edu.cn E-mail:phchen@nuaa.edu.cn
  • 作者简介:钟小丹 男, 博士研究生。主要研究方向: 复合材料结构设计与分析。 Tel: 025-84896256 E-mail: jxzhxd@126.com;陈普会 男, 博士, 教授, 博士生导师。主要研究方向: 复合材料结构设计与分析。 Tel: 025-84896256 E-mail: phchen@nuaa.edu.cn

Panel Splices Design and Analysis of Double Bubble Intersection in Composite Pressure Cabin

ZHONG Xiaodan1, CHEN Puhui1, LIU Liyang2, WANG Jin2   

  1. 1. Key Laboratory of Fundamental Sciences for National Defense-Advanced Design Technology of Flight Vehicles, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
    2. Shenyang Institute of Aircraft Design, Shenyang 110035, China
  • Received:2012-11-29 Revised:2013-03-11 Online:2013-10-25 Published:2013-03-19

摘要:

按照连接设计要求及机身压差载荷水平,开展了复合材料增压舱双圆截面交点连接设计研究。采用壳-梁耦合有限元模型对两种双圆交点连接构型方案在压差载荷作用下的面外位移进行分析。在此基础上,对其中的对接连接构型方案进行强度校核:通过Fastener单元提取连接结构的钉载分布后,采用单钉模型进行细节结构强度校核,进而评估整个连接区的失效载荷。研究结果表明,采用对接的连接设计方案,双圆交点区在压差载荷下的横向变形较小,该设计方案能够满足设计要求。

关键词: 双圆截面, 增压舱, 复合材料, 多钉连接, 失效分析

Abstract:

According to the design criteria of mechanical joints and differential pressure load, a study is performed on panel splices design of a double bubble intersection in a composite pressure cabin structure. Two different panel splices of the double bubble intersection in a composite fuselage are designed under differential pressure loads, and the transverse displacement of the panels is analyzed by a shell-beam finite element model. Then the strength of butt joint concept is checked. The load distribution of the multiple-bolted joints in the structure is first calculated by using fastener elements; then the failure strength of the panel splices is assessed by failure analysis on single-bolted joints at critical locations. The result demonstrates that the butt joint design concept can improve the transverse displacement of the panels significantly under differential pressure loads and satisfy the design requirements.

Key words: double bubble intersection, pressure cabin, composite, multiple-bolted joint, failure analysis

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