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Abstract
Slender aerodynamic structures such as helicopter rotor blades are routinely idealised as 1D beams with associated cross-sectional stiffness properties, and often exhibit structural couplings. A strength of materials based analytical model is presented for determining the cross-sectional stiffness that couples flap bending and torsion (a coupling that is of particular interest in helicopter rotor blade design), by considering strains of individual substructures of the cross-section. The section may be square or rectangular in nature and be foam-filled or hollow. The top and bottom skins may exhibit anisotropic elastic behaviour through non-symmetry and both membrane and flexural anisotropy. This allows a more detailed parametric investigation of this cross-sectional property than is possible with existing analytical models. The analytical model is validated by comparison with a finite element model of the cross-section.
Translated title of the contribution | Flap-torsion coupling in sandwich beams and filled box sections |
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Original language | English |
Pages (from-to) | 923 - 955 |
Number of pages | 33 |
Journal | Thin-Walled Structures |
Volume | 43(6) |
DOIs | |
Publication status | Published - Jun 2005 |
Bibliographical note
Publisher: Elsevier LtdFingerprint
Dive into the research topics of 'Flap-torsion coupling in sandwich beams and filled box sections'. Together they form a unique fingerprint.Projects
- 1 Finished
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STRUCTURALLY EFFICIENT DESIGN INCORPORATING MATERIAL ANISOTROPHY
Weaver, P. M. (Principal Investigator)
1/10/02 → 1/10/07
Project: Research