曲线纤维复合材料矩形机翼的颤振分析  

Flutter Analysis of Curved Fiber Composite Rectangular Wing

作　　者：杨舒婷 王泽溪 万志强[1] YANG Shuting;WAN Zexi;WAN Zhiqiang(School of Aeronautic Science and Engineering,Beihang University,Beijing 100089,China)

机构地区：[1]北京航空航天大学航空科学与工程学院,北京100089

出　　处：《纤维复合材料》2019年第4期33-39,共7页Fiber Composites

摘　　要：现代飞行器对于结构减重具有迫切需求,复合材料在飞机上应用的比重也越来越高。传统直线纤维复合材料层合板易发生失稳破坏,不能充分发挥复合材料层合板的性能,为了满足更高的性能需求,曲线纤维复合材料层合板成为一个重要的研究方向。通过调研国内外对变刚度复合材料层合板研究的相关文献,以及曲线纤维层合板在气动弹性领域的具体进展,发现曲线纤维应用于气动弹性翼面结构的设计较少,大部分仍然为传统的直线纤维铺层,曲线纤维复合材料在气动弹性应用方面仍有待进一步深入研究。本文将基于已有的颤振分析方法,结合曲线纤维复合材料铺层,通过改变曲线纤维的铺层角度方向,对曲线纤维复合材料矩形机翼的固有模态、颤振等气动弹性性能进行分析,并进一步探讨不同的曲线纤维角度变化规律对颤振问题的影响。Modern aircraft has an urgent need for structural weight reduction,and the proportion of composite materials used in aircraft is also increasing.Traditional linear fiber reinforced composite laminates are prone to instability and failure,and can not give full play to the performance of composite laminates.In order to meet higher performance requirements,curved fiber reinforced composite laminates have become an important research direction.By investigating the related literatures on variable stiffness composite laminates at home and abroad,and the concrete progress of curved fiber laminates in aeroelastic field,it is found that curved fiber laminates are seldom used in aeroelastic wing structure design,and most of them are still traditional linear fiber laminates.The application of curvilinear fibre composites in aeroelasticity still needs further study.I In this paper,based on the existing flutter analysis methods,combined with curvilinear fiber composite laminates,the aeroelastic properties of curvilinear fiber composite rectangular wing,such as natural modes and flutter,are analyzed by changing the angle direction of curvilinear fiber laminations.And the influence of the angle variation of different curved fibers on the flutter problem is further discussed.

关 键 词：曲线纤维 层合板 颤振 气动弹性 

分 类 号：V214.8[航空宇航科学与技术—航空宇航推进理论与工程]