材料性能对大展弦比机翼非线性静气动弹性特性的影响研究  

Effect of material properties on nonlinear static aeroelastic properties of high-aspect-ratio wings

作　　者：雷帅 王军利[1] 李托雷 李庆庆 陆正午 冯博琳 LEI Shuai;WANG Jun-li;LI Tuo-lei;LI Qing-qing;LU Zheng-wu;FENG Bo-lin(Mechanical Engineering College,Shaanxi University of Technology,Hanzhong 723000,China;Northwest Institute of Mechanical&Electrical Engineering,Xianyang 712099,China)

机构地区：[1]陕西理工大学机械工程学院,陕西汉中723000 [2]西北机电工程研究所,陕西咸阳712099

出　　处：《机电工程》2020年第12期1432-1438,共7页Journal of Mechanical & Electrical Engineering

基　　金：陕西省自然科学基金资助项目(2020JM-600);陕西省科学技术厅重点项目(2017ZDXM-GY-138);陕西省教育厅科研项目(19JK0172);陕西省工业自动化重点实验室开放课题(SLGPT2019KF01-13)。

摘　　要：针对大展弦比复合材料机翼的非线性静气动弹性问题,采用CFD/CSD双向松流固耦合的计算方法,对相同厚度的复合材料机翼和铝合金机翼的非线性静气动弹性特性进行了研究。以Navier-Stokes(N-S)方程为控制方程,对气动载荷进行了求解,耦合求解了非线性结构运动方程;对不同攻角下复合材料机翼的结构特性、纵向气动特性及稳定性进行了研究,并将结果与等厚度的铝合金材料机翼进行了比较。研究结果表明:与铝合金机翼相比,复合材料机翼减重达到25.95%;在升力方向的弹性变形上,复合材料机翼比铝合金机翼增大约29.6%;复合材料机翼的刚度相比铝合金有所降低。Aiming at the problem of nonlinear static aeroelasticity of composite wings with high-aspect-ratio,the CFD/CSD bidirectional loose fluid-solid coupling calculation method was used to research the nonlinear static aeroelastic properties of composite wings and aluminum alloy wings with the same thickness.The aerodynamic load was solved by Navier-Stokes(N-S)governing equation,and the nonlinear structural motion equation was solved.The structure characteristics,longitudinal aerodynamic characteristics and stability of the composite wing at different angles of attack were compared with the same thickness aluminum alloy wing.The results indicate that the composite wing is significantly lighter than the aluminum alloy wing,reaching 25.95%.The elastic deformation of the composite wing in the lift direction is greater than that of the aluminum alloy wing,which has an increase of about 29.6%.Comparing with the aluminum alloy wing,the stiffness of the composite wing is reduced.

关 键 词：大展弦比机翼 复合材料 结构特性 纵向气动特性及稳定性 

分 类 号：TH142[一般工业技术—材料科学与工程] V211[机械工程—机械制造及自动化]