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Modeling and finite element formulation of piezoelectric fiber compositebeams
Author(s) -
Lammering Rolf,
Brockmann Tobias H.
Publication year - 2003
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200310419
Subject(s) - finite element method , helicopter rotor , piezoelectricity , torsion (gastropod) , vibration , aerodynamics , structural engineering , mechanical engineering , anisotropy , beam (structure) , materials science , rotor (electric) , acoustics , computer science , engineering , aerospace engineering , physics , composite material , medicine , surgery , quantum mechanics
Piezoelectric fiber composites with their dynamic characteristics, tailorable anisotropic properties, and high degree of integration provide excellent prospects for structural actuation tasks. An active beam concept with such a material system can be applied to helicopter rotor blades in order to reduce vibrations and noise. The most effective way to actively influence the blade dynamics is to make use of the aerodynamic forces by changing the angle of attack. Thus the goal is to investigate the potential of induced torsion and its different possible actuation schemes on the dynamic behavior of the rotating system. For this purpose a finite beam element formulation is derived and tested successfully.