Aeroelastic Tailoring of a Forward-Swept Wing Using One-dimensional Beam Analysis

2020 ◽  
Vol 48 (8) ◽  
pp. 555-563
Author(s):  
JaeWon Choi ◽  
ByeongUk Lim ◽  
SiHun Lee ◽  
SangJoon Shin
Keyword(s):  
Swept Wing ◽  
Aeroelastic Tailoring ◽  
One Dimensional ◽  
Beam Analysis

scholarly journals Multidisciplinary optimization of an NLF forward swept wing in combination with aeroelastic tailoring using CFRP

2017 ◽  
Vol 8 (4) ◽  
pp. 673-690 ◽  
Author(s):  
Tobias Wunderlich ◽  
Sascha Dähne ◽  
Lars Heinrich ◽  
Lars Reimer
Keyword(s):  
Multidisciplinary Optimization ◽  
Swept Wing ◽  
Aeroelastic Tailoring

Thin-Walled Multicell Beam Analysis for Coupled Torsion, Distortion, and Warping Deformations

2000 ◽  
Vol 68 (2) ◽  
pp. 260-269 ◽  
Author(s):  
J. H. Kim ◽  
Y. Y. Kim
Keyword(s):  
Shear Flows ◽  
Systematic Approach ◽  
Beam Theory ◽  
Warping Function ◽  
Dimensional Theory ◽  
One Dimensional ◽  
Superior Result ◽  
Beam Analysis ◽  
Thin Walled

Due to the complicated deformations occurring in thin-walled multicell beams, no satisfactory one-dimensional beam theory useful for general quadrilateral multicells appears available. In this paper, we present a new systematic approach to analyze the coupled deformations of torsion, distortion, and the related warping. To develop a one-dimensional thin-walled multicell beam theory, the method to determine the section deformation functions associated with distortion and distortional warping is newly developed. In order to guarantee the singlevaluedness of the distortional warping function in multicells, distortional shear flows have been utilized. The superior result by the present one-dimensional theory is demonstrated with various examples.

Composite material structure optimization design and aeroelastic analysis on forward swept wing

2018 ◽  
Vol 233 (13) ◽  
pp. 4679-4695 ◽  
Author(s):  
Xue Rongrong ◽  
Ye Zhengyin ◽  
Ye Kun ◽  
Wang Gang
Keyword(s):  
Optimization Design ◽  
Navier Stokes ◽  
Aerodynamic Load ◽  
Material Structure ◽  
Swept Wing ◽  
Aeroelastic Tailoring ◽  
Aeroelastic Analysis ◽  
Material Orientation ◽  
Weight Penalty ◽  
Divergence Problem

The static aeroelastic torsion divergence problem is the main obstacle to bring forward swept wing into massive applications. The aeroelastic tailoring technique-based radial basis function neural networks (RBFNNs) and genetic algorithm (GA) optimization in MATLAB considering the material orientation, thickness, and lay-up are elucidated in the present work. RBFNNs are used to build a surrogate model between the composite parameters and structure displacement, which is proved robust and accurate. Then an optimal structure is obtained by GA global search based on RBFNNs model with the weight constrain. The displacements of the forward swept wing caused by an approximate aerodynamic load are decreased 32.5% through finite element method (FEM) static structural analysis. The modal analysis illustrates that the first mode frequency increases by 33.0% and the second mode increases by 37.9%. A computational aeroelasticity approach is developed by in-house Hybrid Unstructured Reynolds-Averaged Navier-Stokes solver associating an open source FEM code – Calculix. The results of coupling calculations show effectiveness of aeroelastic tailoring optimization of composite forward swept wing without weight penalty. The results obtained demonstrate that for the forward swept wing, the most violent situation appears around Mach Number 1.0 where the aeroelastic tailoring optimization could decrease the torsion angle by nearly 70.0%. The torsion of forward swept wing will increase at subsonic and decrease at supersonic with the increase of velocity.

scholarly journals Aeroelastic tailoring of an NLF forward swept wing

2017 ◽  
Vol 8 (3) ◽  
pp. 461-479 ◽  
Author(s):  
Tobias Wunderlich ◽  
Sascha Dähne
Keyword(s):  
Swept Wing ◽  
Aeroelastic Tailoring

scholarly journals LOCAL NUMERICAL SOLUTION OF BOUNDARY PROBLEMS OF STRUCTURAL MECHANICS WITH THE USE OF HYBRID DISCRETE WAVELET BASIS

2018 ◽  
Vol 14 (1) ◽  
pp. 113-125
Author(s):  
Marina L. Mozgaleva ◽  
Pavel A. Akimov ◽  
Dmitry F. Semin
Keyword(s):  
Structural Analysis ◽  
Numerical Solution ◽  
Grid Method ◽  
General Idea ◽  
Discrete Wavelet ◽  
Wavelet Basis ◽  
Boundary Problems ◽  
One Dimensional ◽  
Numerical Example ◽  
Beam Analysis

The distinctive paper is devoted to the two-grid method of structural analysis based on hybrid discrete wavelet basis (in particular, the simplest one-dimensional problems are under consideration). Approximations of he mesh functions in this basis, general idea of the two-grid method and one-dimensional numerical example of beam analysis are presented.

A one-dimensional self-gravitating stellar gas

1966 ◽  
Vol 25 ◽  
pp. 46-48 ◽  
Author(s):  
M. Lecar
Keyword(s):  
Gravitational Field ◽  
Phase Space ◽  
Motion Picture ◽  
Space Distribution ◽  
Two Dimensional ◽  
One Dimensional ◽  
Phase Space Distribution ◽  
Dimensional Phase Space ◽  
The Mean

“Dynamical mixing”, i.e. relaxation of a stellar phase space distribution through interaction with the mean gravitational field, is numerically investigated for a one-dimensional self-gravitating stellar gas. Qualitative results are presented in the form of a motion picture of the flow of phase points (representing homogeneous slabs of stars) in two-dimensional phase space.

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