Affiliation of Author(s):航空学院

Journal:SENSORS AND SMART STRUCTURES TECHNOLOGIES FOR CIVIL, MECHANICAL, AND AEROSPACE SYSTEMS 2017

Key Words:Compound flexible skin cross-shaped honeycomb representative volume element method mechanical properties equivalent elastic modulus off-axial tension method interference of structures light-weight requirements

Abstract:In recent years, more and more studies focus on compound flexible skin structures. It is a kind of compound skin used deformable honeycomb structure to support flexible panel that has a good engineering application potential. The mechanical properties of flexible skins based on deformable honeycomb are mainly up to deformable honeycomb structures. A kind of cross-shaped flexible honeycomb with good in-plane deformability was proposed by designing the shapes and arrangement patterns of honeycomb cellular. On the other hand, considering variable camber/span/chord scheme, one kind of compound flexible skin was designed in which the cross-shaped flexible honeycomb is overlay with silicone face-sheet. Researches on the mechanical property of this new cross-shaped honeycomb were carried out aiming at the deformation demand of flexible skin, which can homologous meet the demands of deformation and load bearing. The in-plane deformation mechanism of the honeycomb structure was analyzed by representative volume element method, which derived the equivalent elastic modulus of honeycomb structures, as well as the relationship between mechanical properties and cell shape parameters. The nonlinear mechanical characteristics of cross-shaped honeycomb were researched by simulation method. In addition, experiments were performed to validate the theoretical models, which showed the derived results accordant with the analytical formulas and excellent deformable capacity of the cross-shaped honeycomb. Finally, the structure parameters of the designed compound flexible skins were discussed and the simplified formula for engineering application was derived according to the deformation and aerodynamic load of the wing surface.

ISSN No.:0277-786X

Translation or Not:no

Date of Publication:2017-01-01

Co-author:Zou, Tingting

Correspondence Author:周丽