scholarly journals Transonic Static Aeroelastic Numerical Analysis of Flexible Complex Configuration Wing

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Changrong Zhang ◽  
Hongtao Guo ◽  
Binbin Lv ◽  
Jun Zha ◽  
Li Yu
Keyword(s):  
Numerical Analysis ◽  
Large Deformation ◽  
Body Length ◽  
Small Diameter ◽  
Static Stability ◽  
Complex Configuration ◽  
Flight Performance ◽  
Design Point ◽  
Static Aeroelasticity ◽  
Lift Line

Diamond back wing is subjected to large deformation while gliding, which significantly changes characteristics of the lift as well as the static stability. For this reason, conventional rigid aircraft assumption cannot meet the requirements of the aerodynamic analysis of such aircrafts for accuracy. In this paper, based on CFD/CSD methods, the static aeroelasticity of a small diameter bomb with diamond back wing was studied. The results showed that static aeroelastic effects cause the slope of lift line to drop by 21% and the aerodynamic centre to move backwards by a 1.5% bomb body length, which will deviate the actual flight performance from the design point, thereby decreasing the cruise efficiency and the cruise range.

The Static Aeroelasticity of Slender Configurations

1963 ◽  
Vol 14 (1) ◽  
pp. 75-104 ◽  
Author(s):  
G. J. Hancock
Keyword(s):  
Static Stability ◽  
Aerodynamic Forces ◽  
Flexible Aircraft ◽  
The Past ◽  
Plate Models ◽  
Non Linear ◽  
The Future ◽  
Static Aeroelasticity ◽  
Definition Of ◽  
Image Position

SummaryThe validity and applicability of the static margin (stick fixed) Kn,where as defined by Gates and Lyon is shown to be restricted to the conventional flexible aircraft. Alternative suggestions for the definition of static margin are put forward which can be equally applied to the conventional flexible aircraft of the past and the integrated flexible aircraft of the future. Calculations have been carried out on simple slender plate models with both linear and non-linear aerodynamic forces to assess their static stability characteristics.

Large deformation numerical analysis of plate anchor keying process

2015 ◽  
pp. 845-850
Author(s):  
Z Chen ◽  
K Tho ◽  
C Leung ◽  
Y Chow
Keyword(s):  
Numerical Analysis ◽  
Large Deformation ◽  
Plate Anchor

scholarly journals Design of compliant mechanism-based variable camber morphing wing with nonlinear large deformation

2019 ◽  
Vol 16 (6) ◽  
pp. 172988141988674 ◽  
Author(s):  
Yaqing Zhang ◽  
Wenjie Ge ◽  
Ziang Zhang ◽  
Xiaojuan Mo ◽  
Yonghong Zhang
Keyword(s):  
Large Deformation ◽  
Compliant Mechanisms ◽  
Compliant Mechanism ◽  
Leading Edge ◽  
Aerodynamic Performance ◽  
Flight Performance ◽  
Morphing Wing ◽  
Structure Topology ◽  
Trailing Edges ◽  
Morphing Wings

The morphing wing with large deformation can benefit its flight performance a lot in different conditions. In this study, a variable camber morphing wing with compliant leading and trailing edges is designed by large-displacement compliant mechanisms. The compliant mechanisms are carried out by a hyperelastic structure topology optimization, based on a nonlinear meshless method. A laminated leading-edge skin is designed to fit the curvature changing phenomenon of the leading edge during deformation. A morphing wing demonstrator was manufactured to testify its deformation capability. Comparing to other variable camber morphing wings, the proposal can realize larger deflection of leading and trailing edges. The designed morphing wing shows great improvement in aerodynamic performance and enough strength to resist aerodynamic and structural loadings.

Numerical Analysis of Dynamic Compaction based on Large Deformation

2010 ◽  
Vol 168-170 ◽  
pp. 330-333
Author(s):  
Neng Gang Xie ◽  
Yun Chen ◽  
Ye Ye ◽  
Lu Wang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Numerical Analysis ◽  
Large Deformation ◽  
Governing Equation ◽  
Dynamic Compaction ◽  
Iterative Calculation ◽  
Non Linear ◽  
The Relationship ◽  
Element Method

In the numerical analysis of foundation consolidation by using dynamic compaction, many kinds of non-linear conditions exist. This paper adopts large deformation on the relationship between strain and displacement. Non-linear governing equation of soil, based on finite element method, is established. Iterative calculation form is raised. Finally, non-linear numerical analysis is done to a calculation example.

scholarly journals Numerical analysis of large deformation processes at elevated temperatures

2006 ◽  
Vol 195 (33-36) ◽  
pp. 3947-3959 ◽  
Author(s):  
A. Andrade-Campos ◽  
L.F. Menezes ◽  
F. Teixeira-Dias
Keyword(s):  
Numerical Analysis ◽  
Large Deformation ◽  
Elevated Temperatures ◽  
Deformation Processes

scholarly journals EXPERIMENTAL STUDY ON LARGE DEFORMATION BEHABIOR OF A SINGLE SMALL-DIAMETER PILE

2004 ◽  
pp. 17-27 ◽  
Author(s):  
Hisashi MURAISHI ◽  
Naoyuki OTA ◽  
Tomoyasu SUGIYAMA ◽  
Kanji NAKAI ◽  
Katsuya OKADA
Keyword(s):  
Experimental Study ◽  
Large Deformation ◽  
Small Diameter

Study on the Influence of Stability for Higher Precipitous Open Pit Slope under Mining Blasting

2011 ◽  
Vol 255-260 ◽  
pp. 3822-3826 ◽  
Author(s):  
Zhi Yu Zhang ◽  
Long Fa Luan ◽  
Ji Yao ◽  
Jian Bin Xie ◽  
Xiang Long Li
Keyword(s):  
Large Deformation ◽  
Limit Equilibrium ◽  
Static Stability ◽  
Open Pit ◽  
Blasting Vibration ◽  
Phosphate Mine ◽  
Stability Of Slope ◽  
The Stability ◽  
Lagrange Element ◽  
Element Method

Based on the hydrological, geologies and slope features of Jianshan phosphate mine in Yunnan province, the geomechanics model of slope was established. Then the static stability of different elevations in mining section was studied by using methods such as the rigid body limit equilibrium method, finite element method, continuum large deformation Lagrange element method. According to the supervise data of the mining blasting, the dynamic response of the slope in blasting was studied by continuum large deformation Lagrange element method, and some suggestions were proposed for following mining blasting. The research results show that the slope was in the stable status before blasting vibration. Current mining blasting vibration has little effect on the stability of slope, but would reduce the safety factor of the top of the slope. Single blasting would enlarge the instantaneous acceleration of the top of the slope in a ratio of 8.8% and 10.8%.

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