A moderate deflection composite helicopter rotor blade model with an improved cross-sectional analysis

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:46

Article

Friedmann, Peretz P.¹  Glaz, Bryan¹  Palacios, Rafael² 

[1] Univ Michigan, Dept Aerosp Engn, Ann Arbor, MI 48109 USA

[2] Univ London Imperial Coll Sci Technol & Med, Dept Aeronaut, London SW7 2AZ, England

关键词: Composite beams;    Helicopter rotor blades;    VABS;   

DOI  :  10.1016/j.ijsolstr.2008.09.017

来源: Elsevier

【 摘 要 】

The compatibility between a composite beam cross-sectional analysis based on the variational asymptotic approach, and a helicopter rotor blade model which is part of a comprehensive rotorcraft analysis code is examined. It was found that the finite element cross-sectional analysis code VABS can be combined with a moderate deflection rotor blade model in spite of the differences between the formulations. The new YF/VABS rotor blade model accounts for arbitrary cross-sectional warping, in-plane stresses, and moderate deflections. The YF/VABS composite rotor blade model was validated against experimental data and various rotor blade analyses by examining displacements and stresses under static loads, as well as aeroelastic stability of a composite rotor blade in hover, and forward flight vibratory hubloads of a four bladed composite rotor. (C) 2008 Elsevier Ltd. All rights reserved.

【 授权许可】

Free