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可变形蜂窝结构设计与力学分析

发表时间:2012-02-15  浏览量:1136  下载量:546
全部作者: 尹维龙,田东奎
作者单位: 哈尔滨工业大学航天学院复合材料与结构研究所;哈尔滨工业大学特种环境复合材料技术国防科技重点实验室
摘 要: 应用梁理论推导可变形蜂窝结构在水平拉力作用下轴向形变量的解析表达式。根据设计形变量、材料弹性极限和弹性模量等要求,给出可变形蜂窝结构的一个重要设计参数——蜂窝角的合理取值范围;并和有限元结果进行对比分析。结果表明:蜂窝角的设计空间取决于材料弹性极限与弹性模量之间的比值,且解析解与有限元结果具有很好的吻合性。针对不同的设计要求,给出“相同材料实现不同形变量”、“相同蜂窝形状实现不同形变量”和“同样材料同样蜂窝角实现不同形变量”的结构设计方案。研究成果可直接为可变形蒙皮结构设计提供必要的理论依据和技术支持。
关 键 词: 航空器结构与设计;变体飞机;蜂窝结构;蜂窝角;梁模型
Title: Structural design and mechanical analysis of morphing honeycomb structure
Author: YIN Weilong, TIAN Dongkui
Organization: Center for Composite Materials and Structures, School of Astronautics, Harbin Institute of Technology; National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology
Abstract: The analytic expressions of equivalent tensile strain of the morphing honeycomb are derived by the use of beam theory in this paper. The design space of honeycomb angle, which is the key parameter for morphing honeycomb, is given according to the requirements such as global strain, elastic limit and elastic modulus. The choice of honeycomb angle is very relative with the ratio of elastic limit and elastic modulus of the material which makes of morphing honeycomb. The analytic results compare very well with the finite element method (FEM) results. The structures are designed for different cases such as the different global strain with the same material, the different global strain with the same shape and the different global strain with the same material and honeycomb angle. The research results will provide useful theoretical basis and technical support for morphing skin.
Key words: structure and design of aircraft; morphing aircraft; honeycomb structure; honeycomb angle; beam model
发表期数: 2012年2月第3期
引用格式: 尹维龙,田东奎. 可变形蜂窝结构设计与力学分析[J]. 中国科技论文在线精品论文,2012,5(3):268-277.
 
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