复合材料加口盖柱壳的设计与分析

›› 2012, Vol. ›› Issue (06): 1437-1441.

复合材料加口盖柱壳的设计与分析

闫光¹, 范舟², 李钟海², 程小全², 刘克格³, 左春柽¹

1. 吉林大学机械科学与工程学院, 长春 130022;
2. 北京航空航天大学航空科学与工程学院, 北京100191;
3. 北京飞机强度研究所, 北京 100083

收稿日期:2012-02-19 出版日期:2012-11-01
通讯作者: 程小全(1966-),男,教授,博士生导师.研究方向:复合材料损伤力学与实验.E-mail:xiaoquan_cheng@buaa.edu.cn E-mail:xiaoquan_cheng@buaa.edu.cn
基金资助:
国家自然科学基金项目(50135010).

Analysis and design of composite cylindrical shell with cover

YAN Guang¹, FAN Zhou², LI Zhong-hai², CHENG Xiao-quan², LIU Ke-ge³, ZUO Chun-cheng¹

1. School of mechanical science and Engineering, Jilin University, Changchun 130022, China;
2. School of Aeronautics Science and Engineering, Beihang University, Beijing 100191, China;
3. Beijing Aircraft Strength Institute, Beijing, 100083, China

Received:2012-02-19 Online:2012-11-01

摘要/Abstract

摘要： 基于ABAQUS软件,建立了1/3复合材料加筋柱壳结构的有限元模型,并对其压缩性能进行了分析,结果表明:结构的破坏形式为压缩稳定性破坏。在此基础上,研究了口盖的材料、铺层、尺寸等对带口盖加筋柱壳压缩性能的影响,为满足工程需要提出了对柱壳结构开口尺寸及口盖设计的改进方法。通过对改进结构进行分析表明,将口盖铺层的纤维整体偏转25°,能够使柱壳屈曲载荷提高6.8%,口盖选用与基体结构相同的复合材料比选用金属材料好。在对质量要求不高的情况下,口盖材料可以用铝合金7075代替碳纤维复合材料。

关键词: 工程力学, 复合材料柱壳, 口盖, 压缩性能, 屈曲载荷

Abstract: The finite element model of one-third composite cylindrical shell was established using ABAQUS, and its compressive properties were analyzed. Results show that the shell failed in buckling, which is in agreement with testing results, thus validating the finite element model. Based on this model, the material, ply sequence and size etc of the cap were analyzed to study their effects on the compressive properties of the shell. This provides the basis for design improvement of the cap to fulfill engineering requirements. Computing results show that deflecting the ply angle of the cap by 25? can improve the buckling strength by 6.8%. The caps with the same composite material of the reinforced frame were batter than those made of metal. Under the condition that the weight of the components is not critical, aluminum alloy 7075 can be used instead of CFRP, which can improve the buckling strength and meet the design requirement. This research provides the reference for the design and analysis of composite cylindrical shell.

Key words: engineering mechanics, composite cylindrical shell, cover, compression, buckling mode

中图分类号:

TB33

闫光, 范舟, 李钟海, 程小全, 刘克格, 左春柽. 复合材料加口盖柱壳的设计与分析[J]. , 2012, (06): 1437-1441.

YAN Guang, FAN Zhou, LI Zhong-hai, CHENG Xiao-quan, LIU Ke-ge, ZUO Chun-cheng. Analysis and design of composite cylindrical shell with cover[J]. , 2012, (06): 1437-1441.

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