基于CR理论的大柔性机翼几何非线性结构建模

doi:10.7527/S1000-6893.2017.721544

固体力学与飞行器总体设计

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基于CR理论的大柔性机翼几何非线性结构建模

王伟, 段卓毅, 耿建中, 张健, 李军府

中航工业第一飞机设计研究院, 西安 710089

收稿日期:2017-05-25 修回日期:2017-07-04 出版日期:2017-11-30 发布日期:2017-07-04
通讯作者: 王伟 E-mail:weiwang1461@126.com
基金资助:
省部级项目

Modelling of geometrically nonlinear structure of large flexible wing based on CR theory

WANG Wei, DUAN Zhuoyi, GENG Jianzhong, ZHANG Jian, LI Junfu

AVIC the First Aircraft Institute, Xi'an 710089, China

Received:2017-05-25 Revised:2017-07-04 Online:2017-11-30 Published:2017-07-04
Supported by:
Provincial/Ministerial Level Project

摘要/Abstract

摘要：

大柔性机翼在气动载荷的作用下，将产生显著的弹性变形，常规线弹性理论的小变形假设不再成立，需要采用能够考虑几何非线性效应的结构模型进行求解。基于CR（Co-Rotational）共旋转有限元理论，把几何非线性大变形分解为刚体的旋转和平移及局部坐标系下的弹性变形，建立了适用于大柔性机翼几何非线性变形描述的结构模型。以大柔性悬臂梁为例，采用载荷增量法，研究了集中弯矩作用下的非线性变形特征，对静力学方法进行了验证，并讨论了耦合加载几何非线性变形特征；以类"太阳神"太阳能布局无人机（UAV）为例，研究了其几何非线性大变形特性。

关键词: 大柔性, 几何非线性, CR理论, 静力学, 大变形

Abstract:

The large flexible wing under aerodynamic loading is subject to distinct large deformation. Therefore, the assumption of small deformation according to the classical linear theory no longer holds, and structural modeling of such wing should consider the geometrically nonlinear effect. Based on Co-Rotational (CR) theory, the geometrically nonlinear large deformation is resolved into rotation and translation of the rigid body and elastic deformation described in the local coordination system. The structural model for description of the geometrically nonlinear deformation of the large flexible wing is constructed in this paper. With the large flexible camber beam as an example, the geometric nonlinear large deformation under the moment load is studied using the increment iterated method. The static method is validated, and the effect of geometrical nonlinear deformation due to coupling load is discussed. The geometrical nonlinear large deformation of a solar Unmanned Aerial Vehicle (UAV) with the layout similar to "Helios" is also studied.

Key words: large flexible, geometrically nonlinear, CR theory, statics, large deformation

中图分类号:

V211.43

王伟, 段卓毅, 耿建中, 张健, 李军府. 基于CR理论的大柔性机翼几何非线性结构建模[J]. 航空学报, 2017, 38(S1): 721544-721544.

WANG Wei, DUAN Zhuoyi, GENG Jianzhong, ZHANG Jian, LI Junfu. Modelling of geometrically nonlinear structure of large flexible wing based on CR theory[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(S1): 721544-721544.

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E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

基于CR理论的大柔性机翼几何非线性结构建模

Modelling of geometrically nonlinear structure of large flexible wing based on CR theory

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