Energy Harvesting from Smart Nanocomposite Microbeam Using Piezoelectric Materials

Document Type : Original Article

Author

Department of Mecahnical Engineering, University of Ayatollah Boroujerdi

Abstract

This paper deals with the energy harvesting of microbeam reinforced with functionally graded carbon nanotubes. The microbeam is intended to place a harmonic position. The effects of size are assumed using strain gradient theory. The effective modulus of the nanocomposite beam is obtained using the principle of porosity. Based on the theory of sine theory, the final relations of motion are calculated. Using the differential square solution and Newmark methods, the energy harvesting and dynamic instability region of the microbeam is calculated. The effects of boundary conditions, volume fraction and distribution of carbon nanotubes, size, temperature and length-to-thickness ratio of microbeam on the dynamic instability curve are shown. Numerical results show that the dynamic instability region occurred at higher resonant frequencies and with increasing volume fraction of carbon nanotubes. In addition, the resonant frequency is higher for functionally graded carbon nanotubes with X-shaped distribution compared to the uniform state. In addition, the electric power produced increases with the increase in the thickness of the piezoelectric layer.

Keywords

References

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Energy Engineering and Management
Volume 13, Issue 2
September 2023
Pages 128-139

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