Damping of Mechanical Vibrations Utilising Shunted Piezoelements

• Autorzy: Kurnik W.
• Konferencja: International Conference on Modelling in Mechatronics (9 ; 02-04.09.2004 ; Kazimierz Dolny, Poland)
• Języki publikacji: EN

Abstrakty

EN

The paper is concerned with damping of beam and shaft vibrations using piezoelements with external shunting circuits. Usually, distributed piezoactuators are applied to beams or plates to contact curvature occuring during transverse vibrations. Here, an alternative concept of vibration control is explored consisting in utilising additional dissipation in shunting circuits of piezoelements bonded to a beam or shaft surface. Attention is focused on a cantilever beam subject to tip-concentrated follower load (Beck's column) and/or to kinematic excitation by clamped edge motion. Efficiency of piezodamping is studied in both stabilising the equilibrium and reduction of resonance. On the other hand, the effect of shunting is examined in case of ring-like piezotransducers controlling torsional vibrations of a shaft under harmonic excitation. A shift of resonance zone and reduction of top vibration amplitudes are shown as functions of shunting parameters.

Słowa kluczowe

EN

Beck's column; shaft; damping; piezoelements; shunting

• Wydawca: Oficyna Wydawnicza Politechniki Warszawskiej
• Czasopismo: Machine Dynamics Problems
• Rocznik: 2004
• Tom: Vol. 28, No. 4
• Strony: 15--26
• Opis fizyczny: Bibliogr. 10 poz.

Twórcy

autor

Kurnik W.

• Institute of Machine Design Fundamentals, Warsaw University of Technology,

Bibliografia

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