This paper proposes and investigates a piezoelectric energy harvesting system based on\nthe flow induced vibration of a piezoelectric composite cantilever pipe. Dynamic equations for the\nproposed energy harvester are derived considering the fluid-structure interaction and piezoelectric\ncoupling vibration. Linear global stability analysis of the fluid-solid-electric coupled system is\ndone using the numerical continuation method to find the neutrally stable vibration mode of the\nsystem. A measure of the energy harvesting efficiency of the system is proposed and analyzed.\nA series of simulations are conducted to throw light upon the influences of mass ratio, dimensionless\nelectromechanical coupling, and dimensionless connected resistance upon the critical reduced velocity\nand the normalized energy harvesting efficiency. The results provide useful guidelines for the practical\ndesign of piezoelectric energy harvester based on fluid structure interaction and indicate some future\ntopics to be investigated to optimize the device performance.
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