变刚度对后掠机翼动强度特性影响研究

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英文篇名：Study on the Effect of Stiffness Variation on the Dynamic Strength Characteristics of a Swept Wing 作者：黄烨 英文作者：HUANG Ye;First Aircraft Institute; 关键词：后掠机翼 ; 固有模态 ; 颤振 ; 刚度变化 ; 临界速度 英文关键词：swept wing;;natural mode;;flutter;;stiffness variation;;critical speed 中文刊名：FJSJ 英文刊名：Aircraft Design 机构：第一飞机设计研究院; 出版日期：2018-10-15 出版单位：飞机设计 年：2018 期：v.38;No.187 语种：中文; 页：FJSJ201805006 页数：4 CN：05 ISSN：21-1339/V 分类号：27-30

摘要

机翼刚度设计是影响飞行器动强度特性的主要因素之一。以某型飞行器后掠机翼为对象,建立动强度分析基准模型,对机翼的动强度特性参数进行分析。考虑机翼刚度优化设计,对基准模型的主翼盒段、机翼接头连接、翼稍小翼进行变刚度建模和动强度特性分析,分别获得结构刚度和连接刚度变化对机翼动强度特性的影响规律,为机翼的动强度改进设计提供指导。
        The stiffness design of a wing is one of the main factors affecting the dynamic strength of an aircraft. Targeting the swept wing of an aircraft,its dynamic finite element model is established as the reference model for the subsequent parametric analysis. The frequency and flutter analyses are conducted to the reference model to obtain its dynamic strength data. In order to improve the dynamic properties of the wing,stiffness variations including wing box stiffness,connection stiffness and winglet stiffness are evaluated to the reference model. The relationship between flutter speed and the structural and connection stiffness are obtained of the swept wing which could provide technical guidance for its dynamic strength design.

引文

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