In recent years, micropumps have been investigated by various researchers as drug delivery and disease diagnostic devices. Many of these micropumps have been designed, considering available micro fabrication technologies rather than appropriate pump performance analysis. Piezoelectric based micro pumps are more popular as compared to other smart materials being explored. In this paper, four segment piezoelectric bimorph actuator (FSPB) are compared with circular disc piezoelectric bimorph actuator (CDPB) based pump. The static and transient behaviors under various electric fields have been analyzed by using ANSYS 12.1<sup>(R)</sup> finite element software. Simulation results show that dividing the actuator in segment can amplify the deflection and improve the performance of the pump.
In this study a 3-D finite element analysis for cantilever plate structure excited by giving unit deflection
at free end is presented. Finite Element Modeling based on ANSYS12.0 package using modal analysis
and harmonic analysis is used in this study for cantilever plate structure by patch type of piezoelectric
plates of PZT-5H4E as a piezo material and steel as a substrate material for Cantilever Beam. This
study aims to investigate the influence of different geometry parameters like, length and width &
position of piezo patches on voltage generation & try to find out optimal geometrical dimensions of
piezoelectric beam for maximum energy harvesting. ANSYS-12.0 is used as optimization tool. Here the
basic modeling with an equivalent circuit is done initially by considering some specific dimensions of
beam. Then simulation of the same is done by varying different geometrical parameters where effect of
change in length of piezo patch is analyzed first .The second affecting parameter considered is change
in Width of piezo patch and last one is the position of piezo patch along the length of beam is analyzed,
where output is measured in turn of voltage generated. This study aims to investigate the Optimum
placement of piezoelectric actuators in a cantilever beam for maximum energy harvesting.