复合材料机翼热气弹剪裁研究及分析系统研发  

Aerothermoelastic tailoring research of composite wing and analysis system development

作　　者：薛程 李彦斌[1,2] 杭晓晨 郑浩 王天怡[1,2] 费庆国 Xue Cheng;Li Yanbin;Hang Xiaochen;Zheng Hao;Wang Tianyi;Fei Qingguo(School of Mechanical Engineering,Southeast University,Nanjing 211189,China;Jiangsu Engineering Research Center of Aerospace Machinery,Southeast University,Nanjing 211189,China;School of Mechanical and Electronic Engineering,Nanjing Forestry University,Nanjing 210037,China)

机构地区：[1]东南大学机械工程学院,南京211189 [2]东南大学江苏省空天机械装备工程研究中心,南京211189 [3]南京林业大学机械电子工程学院,南京210037

出　　处：《东南大学学报（自然科学版）》2022年第5期899-906,共8页Journal of Southeast University：Natural Science Edition

基　　金：国家自然科学基金资助项目(52175220,52125209);江苏省自然科学基金资助项目(BK20211558);江苏省普通高校研究生科研创新计划资助项目(KYCX21_0084);上海航天科技创新基金资助项目(SAST2020-024)。

摘　　要：针对高超声速飞行器服役状态气动力热载荷环境复杂的问题,采用单向耦合方式对环境载荷进行解耦,对马赫数5~8的飞行工况下机翼气动力热载荷情况进行有限元分析.基于经典颤振理论得到临界颤振边界,并确定了机翼颤振失稳表现形式为一阶弯扭耦合.考虑到复材机翼结构刚度的可塑性,对典型服役工况下复材机翼进行气弹剪裁优化设计.以静强度和热颤振速度为约束,质量最小为优化目标,通过改变铺层材料层数、铺层角度及顺序的方式调整复合材料结构弯扭耦合刚度,以达到最佳的结构动力学特性和气弹效果.基于C/C++开源环境开发Aero-Opt软件,搭建自主工业化分析平台,并针对最恶劣气动加热条件下的复合材料机翼开展热气弹剪裁研究.优化后机翼的热颤振边界提高了22.4%,质量降低了15.76%.Aiming to solve the complicated problem about the coupling effect of aerodynamic force and heat for hypersonic vehicle, one-way coupling was applied to decouple the environmental load. Then, the distribution of aerodynamic force and heat of a typical composite wing under the flight situation of Mach 5 to Mach 8 was studied by finite element analysis. Based on the classical flutter theory, the critical flutter boundary was obtained. The results show that flutter phenomenon is caused by first-order bending-torsional coupling. Considering the fabricability of the composite wing, the aerothermoelastic tailoring design of composite wing under typical flight situation was carried out. In the optimal process, static intensity and thermal flutter velocity are considered as the constraints, and the optimization target is to obtain minimum mass. For approaching the best structural dynamic characteristics and aeroelastic effect, the bending-torsional coupled stiffness of the composite structure is regulated through changing layers, paving angles and laying sequence. Based on C/C++ open source environment, a software called Aero-Opt was developed to construct an independent-industrialized analysis platform, and the aerothermoelastic tailoring research of the composite wing under most severe aerodynamic heating condition was carried out. After optimization, the thermal flutter boundary of the composite wing is improved by 22.4%, while its mass is reduced by 15.76%.

关 键 词：高超声速飞行器 热颤振 遗传算法 热气弹剪裁 分析系统研发 

分 类 号：TB330.1[一般工业技术—材料科学与工程]