Jürgen Schöftner, Gerda Buchberger, Andreas Brandl, Hans Irschik,
"Theoretical prediction and experimental verification of shape control of beams with piezoelectric patches and resistive circuits"
, in Composite Structures, Vol. 133, Elsevier, Seite(n) 746?755, 7-2015, ISSN: 1879-1085
Original Titel:
Theoretical prediction and experimental verification of shape control of beams with piezoelectric patches and resistive circuits
Sprache des Titels:
Englisch
Original Kurzfassung:
This paper presents one-dimensional analytical, three-dimensional numerical and experimental results
for shape control of beam-type structures. The beam structures under consideration are assumed to be
slender and the surface of the elastic substrate is covered by several piezoelectric patches whose electrodes
are connected by a resistor network. In general, the structure will deform, if an external load acts
on the system and no control action is present. Therefore, the question arises how to choose the network
configuration, in order to completely suppress deflections or vibrations at several desired locations along
the beam axis. This aim is also known as shape control. As a practical example, a cantilever beam subjected
to a tip-force is considered. First we present shape control results for the one-dimensional
extended Bernoulli?Euler theory and three-dimensional finite element calculations with ANSYS for static
loads and time-harmonic excitations. Then the theory is verified by an experimental setup and it is shown
by several frequency sweep excitations and by a monofrequent harmonic excitation close to the first
eigenfrequency that shape control may be achieved approximately, proving the applicability of the proposed
control method.
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