An overview of the development and application of post-buckled precompressed (PBP) piezoelectric actuators is presented. It has been demonstrated that PBP actuators outperform conventional piezoelectric actuators by relying on axial compression to counter the inherent stiffness in the actuator element. In doing so, the mechanical work output has been shown to increase threefold compared with conventional bimorph actuators. Actuator stroke has been demonstrated to increase up to 300% without compromising the blocked force capability. This has resulted in an expansion of the design space of piezoelectric bender elements and has made them excellent candidates for potentially replacing certain classes of conventional electromechanical flight control actuators. The successful application of PBP elements can be found in unmanned aerospace systems ranging from subscale vertical-take-off-and-landing vehicles to supersonic missile fins. With respect to conventional electromechanical servoactuators, it is demonstrated that PBP actuator elements induce a lower systems weight fraction, a substantially higher bandwidth, and an order of magnitude lower power consumptions and part count.
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e-mail: r.vos@tudelft.nl
e-mail: barrettr@ku.edu
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March 2010
Research Papers
Post-Buckled Precompressed Techniques in Adaptive Aerostructures: An Overview
Roelof Vos,
Roelof Vos
Assistant Professor
Mem. ASME
Faculty of Aerospace Engineering,
e-mail: r.vos@tudelft.nl
Delft University of Technology
, 2600 GB Delft, The Netherlands
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Ron Barrett
Ron Barrett
Associate Professor
Mem. ASME
Department of Aerospace Engineering,
e-mail: barrettr@ku.edu
University of Kansas
, Lawrence, KS 66045
Search for other works by this author on:
Roelof Vos
Assistant Professor
Mem. ASME
Faculty of Aerospace Engineering,
Delft University of Technology
, 2600 GB Delft, The Netherlandse-mail: r.vos@tudelft.nl
Ron Barrett
Associate Professor
Mem. ASME
Department of Aerospace Engineering,
University of Kansas
, Lawrence, KS 66045e-mail: barrettr@ku.edu
J. Mech. Des. Mar 2010, 132(3): 031004 (11 pages)
Published Online: March 19, 2010
Article history
Received:
October 6, 2008
Revised:
February 1, 2010
Online:
March 19, 2010
Published:
March 19, 2010
Citation
Vos, R., and Barrett, R. (March 19, 2010). "Post-Buckled Precompressed Techniques in Adaptive Aerostructures: An Overview." ASME. J. Mech. Des. March 2010; 132(3): 031004. https://doi.org/10.1115/1.4001202
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