复合材料科学与工程Issue(10)：65-71,7.DOI:10.19936/j.cnki.2096-8000.20241028.009
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
摘要
Abstract
The dipole grid method is used to calculate the non-constant aerodynamic forces and the P-K meth-od is used to calculate the flutter velocity to investigate the flutter characteristics of composite airfoils with large as-pect 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 an-gle 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 low-est 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Key words
large aspect ratio composite wing/layering parameters/flutter velocity/pit分类
通用工业技术引用本文复制引用
王康杰,王军利,曹鹏,刘志远,张升..铺层参数对大展弦比复合材料机翼气动弹性的影响研究[J].复合材料科学与工程,2024,(10):65-71,7.基金项目
陕西省重点研发计划项目(2023-YBGY-385) （2023-YBGY-385）
陕西省自然科学基础研究计划项目(2023-JC-YB-018) （2023-JC-YB-018）
陕西理工大学2023年校级研究生创新基金项目(SLGYCX2313) （SLGYCX2313）
