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An Analytic Approach to Piezoelectric Fiber Composites ‐ Design Study of Active Beams with Closed Cross‐Sections
Author(s) -
Brockmann T.,
Lammering R.
Publication year - 2002
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/1617-7061(200203)1:1<139::aid-pamm139>3.0.co;2-3
Subject(s) - image warping , torsion (gastropod) , materials science , piezoelectricity , stiffness , micromechanics , actuator , structural engineering , composite material , beam (structure) , timoshenko beam theory , computer science , engineering , composite number , medicine , surgery , artificial intelligence
The interest in piezoelectric fiber composites with respect to the development of structurally integrated systems for fast actuation, vibration suppression, and acoustic control is founded on their adaptability to shape, stiffness, and actuation requirements. Layers of such material are laminated in order to form the walls of a single‐cell closed cross‐section beam, which is modeled in Timoshenko fashion with additional torsional warping. This allows to examine the interaction between active and load carrying functionalities and to analyze the influence of the diverse parameters from the micromechanics to the structural mechanics level. Active direct, extension coupled, and warping coupled torsion as well as combinations thereof are investigated and the abilities of these actuation mechanisms are compared.