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A Study on Assessment of Composite Couplings for Helicopter Rotor Blades with Multi-cell Sections
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 Title & Authors
A Study on Assessment of Composite Couplings for Helicopter Rotor Blades with Multi-cell Sections
Jung, Sung-Nam; Park, Il-Ju; Shi, Eui-Sup; Chopra, Inderjit;
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 Abstract
In this work, a closed-form analysis is performed for the structural response of coupled composite blades with multi-cell sections. The analytical model includes the effects of shell wall thickness, transverse shear, torsion warping and constrained warping. The mixed beam approach based on Reissner's semi-complementary energy functional is used to derive the beam force-displacement relations. The theory is validated against experimental test data and other analytical results for coupled composite beams and blades with single-cell box-sections and two-cell airfoils. Correlation of the present method with experimental results and detailed finite element results is found to be very good.
 Keywords
coupled composite blades;multi-cell sections;mixed beam approach;transverse shear;warping;
 Language
English
 Cited by
 References
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