Abstrakt
Beams with rectangular cross-section, with large length-to-width ratio,
can be excited to torsional vibrations. If the piezoelectric elements are
mounted to the beam in pairs at the same cross-section with two separated
elements positioned on the same side of the beam, and the voltages applied
to them are in the opposite phase, they produce twisting moments which can
be applied to reduce the torsional vibrations. Results of FEM simulations
are presented and analysed in the paper. All analyses are performed for a
steel free-clamped beam. The piezoelectric elements made of PZT material
are mounted in pairs on one side of the beam. The analyses are done for
separated natural modes.
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