Abstract
This paper deals with a vibrational analysis of a stepped-cantilever piezoelectric actuator for the purpose of magnifying its end displacement. The piezoelectric actuator used here is a bimorphic type. As a basic bar of the bimorphic cantilever, we have investigated three kinds of carbon-fiber-reinforced plastic (CFRP) bars. Vibrational analysis has been performed using an electrical circuit analogy of the mechanical vibration system. As a result of simulation and experiment, it was proven that the end displacement could be increased by selecting an appropriate form of stepping.
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