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机翼的展弦比指的是翼展的平方与机翼面积之比或翼展与机翼弦长之比。一般认为,展弦比大于5的机翼就是大展弦比机翼。近十多年来高空长航时飞机越来越受到重视,在长期侦察监控、环境监测和通讯等军民用方面具有广阔的发展前景。为了满足高空长航时的性能和追求高的气动效率,飞机机翼大多采用大展弦比机翼。超单元分析方法是求解大型问题的一种十分有效的手段,该方法把整体结构分化成多个子部件进行分析,每个超单元的处理都形成一组减缩矩阵(质量、阻尼、刚度和
The aspect ratio of the wing refers to the ratio of the square of the span to the area of the wing or the ratio of the span to the chord of the wing. It is generally accepted that a wing with an aspect ratio greater than 5 is a large aspect ratio wing. Over the past more than a decade, the aircraft at high altitude have gained more and more attention. They have broad prospects for development in long-term reconnaissance and monitoring, environmental monitoring and communications and other civil and military applications. In order to meet the performance of high-altitude long-haul and the pursuit of high aerodynamic efficiency, most of the aircraft wing with large aspect ratio wing. The superelement analysis method is a very effective method to solve large-scale problems. The method divides the whole structure into many subcomponents for analysis. Each superelement processing forms a set of reduction matrix (mass, damping, stiffness and