Nonlinear Static Aeroelasticity of High-Aspect-Ratio-Wing Aircraft by Finite Element and Multibody Methods
Nonlinear Static Aeroelasticity of High-Aspect-Ratio-Wing Aircraft by Finite Element and Multibody Methods
复制标题
大展弦比机翼飞机的非线性静气动弹性有限元和多体方法
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
Y. Lemmens
中科院分区：
文献类型：
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作者：
M. Castellani;J. Cooper;Y. Lemmens
开发了两种针对几何非线性的柔性高展弦比机翼飞机进行非线性静态气动弹性分析的程序。这两种方法均基于非线性有限元方法和多体动力学，并分别采用基于双点阵法和条带理论的空气动力学公式。给出了非常灵活的飞机测试案例的各种配平条件下机翼综合载荷的静态气动弹性结果，并与线性结果进行了比较。线性方法和非线性方法之间存在显着差异，并且人们注意到空气动力学的从动力效应以及考虑大位移和旋转的重要性，这被认为是静态飞行载荷计算和随后的机翼结构尺寸计算中差异的主要来源。
Two procedures for the nonlinear static aeroelastic analysis of flexible high-aspect-ratio wing aircraft subject to geometric nonlinearities are developed. The two approaches are based on the nonlinear finite element method and on multibody dynamics, and they employ aerodynamic formulations based on the doublet lattice method and strip theory, respectively. Static aeroelastic results in terms of wing integrated loads at various trim conditions for a very flexible aircraft test case are presented and compared to the linear ones. Significant differences are found between linear and nonlinear approaches, and attention is drawn to the importance of the follower force effects of the aerodynamics and of considering large displacements and rotations, which are identified as the main sources of the discrepancies, for the static flight loads computation and subsequent structural sizing of the wing.
影响因子：
4.7
作者：
Hesse, Henrik;Palacios, Rafael
通讯作者：
Palacios, Rafael