铺层参数对大展弦比复合材料机翼气动弹性的影响研究  

Effect of layup parameters on the aeroelasticity of large span ratio composite wing

作　　者：王康杰 王军利[1,2] 曹鹏 刘志远 张升 WANG Kangjie;WANG Junli;CAO Peng;LIU Zhiyuan;ZHANG Sheng(School of Mechanical Engineering,Shaanxi University of Science and Technology,Hanzhong 723001,China;Shaanxi Key Laboratory of Industrial Automation,Hanzhong 723001,China;Shaanxi Huayan Aviation Instrumentation Co.,Ltd.,Hanzhong 723102,China)

机构地区：[1]陕西理工大学机械工程学院,汉中723001 [2]陕西省工业自动化重点实验室,汉中723001 [3]陕西华燕航空仪表有限公司,汉中723102

出　　处：《复合材料科学与工程》2024年第10期65-71,共7页Composites Science and Engineering

基　　金：陕西省重点研发计划项目(2023-YBGY-385);陕西省自然科学基础研究计划项目(2023-JC-YB-018);陕西理工大学2023年校级研究生创新基金项目(SLGYCX2313)。

摘　　要：采用偶极子格网法计算非定常气动力,利用P-K法计算颤振速度,对大展弦比复合材料机翼的颤振特性进行研究,重点探讨非均衡系数铺层、等厚度多角度铺层和同角度变厚度铺层对颤振速度和高亚音速凹坑现象的影响。研究表明:相比0°铺层角度,±45°铺层角度可以较大幅度提升颤振速度并减小凹坑的区域,获得更大的飞行马赫数和动稳定性;在低亚音速中,与非均衡铺层相比,均衡铺层的颤振速度更高,颤振速度对非均衡系数的影响并不显著;在高亚音速中,均衡铺层可以提升最低点的颤振速度,减小凹坑的深度,而非均衡铺层可以滞后最低点的颤振速度;铺层厚度的增加可以提高颤振速度,且二者呈线性关系,但随着铺层厚度的提升,固有频率降低。The dipole grid method is used to calculate the non-constant aerodynamic forces and the P-K method is used to calculate the flutter velocity to investigate the flutter characteristics of composite airfoils with large aspect ratios,focusing on the effects of non-equilibrium coefficient layups,equal-thickness multiangular layups,and same-angle variable-thickness layups on the flutter velocity and the hypersonic cratering phenomenon.It is shown that the±45°layer angle can increase the flutter speed and reduce the cratering area compared with the 0°layer angle to obtain a larger flight Mach number and dynamic stability;in the low subsonic speed,the flutter speed of the equalized layer is higher than that of the unbalanced layer,and the change of the flutter speed on the unbalanced coefficient is not significant.In high-subsonic speed,the balanced layer can enhance the flutter velocity at the lowest point and reduce the depth of the crater,while the unbalanced layer can lag the flutter velocity at the lowest point;the increase of the layer thickness can enhance the flutter velocity with a linear relationship,but the intrinsic frequency decreases with the increase of the layer thickness.

关 键 词：大展弦比复合材料机翼 铺层参数 颤振速度 凹坑 

分 类 号：TB332[一般工业技术—材料科学与工程]