Effects of structural flexibility of wings in flapping flight of butterfly.
Bioinspir Biomim
; 7(2): 025002, 2012 Jun.
Article
em En
| MEDLINE
| ID: mdl-22617048
ABSTRACT
The objective of this paper is to clarify the effects of structural flexibility of wings of a butterfly in flapping flight. For this purpose, a dynamics model of a butterfly is derived by Lagrange's method, where the butterfly is considered as a rigid multi-body system. The panel method is employed to simulate the flow field and the aerodynamic forces acting on the wings. The mathematical model is validated by the agreement of the numerical result with the experimentally measured data. Then, periodic orbits of flapping-of-wings flights are parametrically searched in order to fly the butterfly models. Almost periodic orbits are found, but they are unstable. Deformation of the wings is modeled in two ways. One is bending and its effect on the aerodynamic forces is discussed. The other is passive wing torsion caused by structural flexibility. Numerical simulations demonstrate that flexible torsion reduces the flight instability.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Asas de Animais
/
Relógios Biológicos
/
Borboletas
/
Voo Animal
/
Modelos Biológicos
Limite:
Animals
Idioma:
En
Revista:
Bioinspir Biomim
Assunto da revista:
BIOLOGIA
/
ENGENHARIA BIOMEDICA
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
Japão