Dynamics of Piezoelectric Cantilevered Beam at Higher Bending Mode for Wind Energy Harvesting

Abstract

In the present work, a numerical study of dynamics of a piezoelectric embedded cantilevered beam vibrating at higher bending mode is carried out. Electric power output from the vibrating structure is also investigated. The investigation is primarily focused for higher mode vibration response as during the natural wind/flow induced vibration (flutter instability), the structure vibrates in combination of higher bending modes. A mathematical model of a cantilever beam with single/multiple piezoelectric patches is developed and solved by model super position approach. It is observed that during higher bending mode vibration, role of frequency of vibration has become more dominant than the amplitude of vibration.