Aeroelastic Analysis of Composite Wings
نویسندگان
چکیده
An aeroelastic stability analysis is presented for high-aspect ratio composite wings. The structural model is based on an asymptotically correct crosssectional formulation and a nonlinear geometric exact beam analysis, both derivable from 3-D elasticity. A new 2-D unsteady inflow finite-state theory is considered for the aerodynamic part of the solution. Theodorsen theory is also implemented and used for most of the preliminary tests. The paper discusses, among other things, the importance of using the right stiffness formulation in order to model material couplings, the variations of divergence and flutter speeds with the changes in the lamination angle of a box-beam model of a wing cross section, and some of the effects of a nonlinear structural model on the aeroelastic stability of a slender wing.
منابع مشابه
Loading Estimation of Flapping Wings under Aeroelastic Effect Using Finite Element Method
The aim of this paper is to provide an aeroelastic computational tool which determines the induced wing loads during flapping flight. For this purpose, a Finite Element (FE) code based on a four-node plate bending element formulation is developed to simulate the aeroelastic behavior of flapping wings in low incompressible flow. A quasi-steady aerodynamic model is incorporated into the aeroelast...
متن کاملStatic Nonlinear Aeroelasticity of Flexible Slender Wings in Compressible Flow
A high-fidelity numerical formulation is presented for the high-speed aeroelastic behavior of slender composite wings. The compressible flow is modeled using the 3-D Euler equations on a deformable mesh, and an asymptotic approximation of the 3-D kinematically-nonlinear equations of elasticity models the anisotropic slender structure. The transfer of the distributed loads and displacements at t...
متن کاملNonlinear Aeroelastic Analysis of Joined-wing Aircraft
Joined-wing aircraft are being designed for ‘sensorcraft’ configuration. Joined wings lead to multiple load paths and constraints. The focus of this work is to understand the nonlinear structural as well as aeroelastic behavior of joined wings. The paper presents a formulation for the nonlinear aeroelastic analysis of joined wings. Results are presented for two joined wings configurations. Over...
متن کاملHigh performance finite element analysis of composite aeroelastic structures
A high performance finite element analysis software tool has been developed for high fidelity deformation analysis of aeroelastic tailored wings and blades made of anisotropic composite materials. The package comprises an in-line semiautomatic adaptive mesh generator and a finite element solver. An aerodynamic solver can be plugged into the package to perform a coupled aero-structure analysis. ...
متن کاملNonlinear Aeroelastic Analysis of Flexible High Aspect Ratio Wings Including Correlation With Experiment
Aerospace) Nonlinear Aeroelastic Analysis of Flexible High Aspect Ratio Wings Including Correlation With Experiment by Justin W. Jaworski Department of Mechanical Engineering and Materials Science Duke University
متن کامل