About: Amplitude-frequency response of an aluminum cantilever beam determined by piezoelectric transducers

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	This work is focused on creation of appropriate finite element model of aluminum cantilever beam with applied pair of piezoelectric patch transducers. Thanks to reversible behavior of piezoelectric effect each patch transducer can represent either actuator or sensor. For precise prediction of amplitude values in numerical simulations each transducer is calibrated before attaching to the beam by strain gauges. From these experiments piezoelectric properties of each piezoelectric patch are obtained. The cantilever beam is actuated by a voltage signal applied to one of the patches. The signal is a linear chirp (sine with swept frequency) with sufficient range to affect selected natural frequencies. The time response of the beam from the piezoelectric sensor and alternatively by a laser position sensor is transformed by STFT algorithm to obtain the characteristics in time-frequency domain (spectrogram). The finite element model of the cantilever beam with piezoelectric patches was created using 3D solid structural and piezoelectric bricks in Ansys. The time response of the model to the chirp voltage signal was determined by a transient analysis. The amplitude-frequency characteristics are compared with experimental results. This work is focused on creation of appropriate finite element model of aluminum cantilever beam with applied pair of piezoelectric patch transducers. Thanks to reversible behavior of piezoelectric effect each patch transducer can represent either actuator or sensor. For precise prediction of amplitude values in numerical simulations each transducer is calibrated before attaching to the beam by strain gauges. From these experiments piezoelectric properties of each piezoelectric patch are obtained. The cantilever beam is actuated by a voltage signal applied to one of the patches. The signal is a linear chirp (sine with swept frequency) with sufficient range to affect selected natural frequencies. The time response of the beam from the piezoelectric sensor and alternatively by a laser position sensor is transformed by STFT algorithm to obtain the characteristics in time-frequency domain (spectrogram). The finite element model of the cantilever beam with piezoelectric patches was created using 3D solid structural and piezoelectric bricks in Ansys. The time response of the model to the chirp voltage signal was determined by a transient analysis. The amplitude-frequency characteristics are compared with experimental results. (en)
Title	Amplitude-frequency response of an aluminum cantilever beam determined by piezoelectric transducers Amplitude-frequency response of an aluminum cantilever beam determined by piezoelectric transducers (en)
skos:prefLabel	Amplitude-frequency response of an aluminum cantilever beam determined by piezoelectric transducers Amplitude-frequency response of an aluminum cantilever beam determined by piezoelectric transducers (en)
skos:notation	RIV/49777513:23520/13:43920233!RIV14-MSM-23520___
http://linked.open...avai/riv/aktivita	P S
http://linked.open...avai/riv/aktivity	P(GAP101/11/0288), S
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Zemčík, Robert Lašová, Zuzana
http://linked.open.../riv/druhVysledku	O - Ostatní výsledky nezařaditelné do žádného z výše uvedených druhů výsledku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Západočeská univerzita v Plzni / Fakulta aplikovaných věd
http://linked.open...dnocenehoVysledku	60258
http://linked.open...ai/riv/idVysledku	RIV/49777513:23520/13:43920233
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Finite element analysis; Frequency spectrum; Piezoelectric materials (en)
http://linked.open.../riv/klicoveSlovo	Frequency spectrum Piezoelectric materials Finite element analysis
http://linked.open...ontrolniKodProRIV	[B3326C942E8A]
http://linked.open...in/vavai/riv/obor	JI
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Design of intelligent composite structures
http://linked.open...UplatneniVysledku	2013
http://linked.open...iv/tvurceVysledku	Zemčík, Robert Lašová, Zuzana
http://localhost/t...ganizacniJednotka	23520

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