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Advance finite element modeling of rotor blade aeroelasticityAn advanced beam finite element has been developed for modeling rotor blade dynamics and aeroelasticity. This element is part of the Element Library of the Second Generation Comprehensive Helicopter Analysis System (2GCHAS). The element allows modeling of arbitrary rotor systems, including bearingless rotors. It accounts for moderately large elastic deflections, anisotropic properties, large frame motion for maneuver simulation, and allows for variable order shape functions. The effects of gravity, mechanically applied and aerodynamic loads are included. All kinematic quantities required to compute airloads are provided. In this paper, the fundamental assumptions and derivation of the element matrices are presented. Numerical results are shown to verify the formulation and illustrate several features of the element.
Document ID
19950039584
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Straub, F. K.
(McDonnell Douglas Helicopter Systems, Mesa, AZ United States)
Sangha, K. B.
(Lockheed Aeronautical Systems Co., Marietta, GA United States)
Panda, B.
(Boeing Defense & Space Group, Helicopter Division, Philadelphia, PA United States)
Date Acquired
August 16, 2013
Publication Date
April 1, 1994
Publication Information
Publication: American Helicopter Society, Journal
Volume: 39
Issue: 2
ISSN: 0002-8711
Subject Category
Aerodynamics
Accession Number
95A71183
Funding Number(s)
CONTRACT_GRANT: NAS2-12343
Distribution Limits
Public
Copyright
Other

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