Energy harvesting in a magnetopiezoelastic system driven by random excitation with uniform and Gaussian distributions

Litak, G., Borowiec, M., Friswell, M. I. and Adhikari, S. (2011) Energy harvesting in a magnetopiezoelastic system driven by random excitation with uniform and Gaussian distributions. Journal of Theoretical and Applied Mechanics, 49(3), pp. 757-764.

Abstract

A simple magneto-piezoelectric system excited by random forces mo- delled with a double well potential is considered. System responses for different realizations of noise with uniform and Gaussian distributions are compared. The results show negligible differences in the regions of small and high noise intensity. A more noticeable difference can be se- en in the intermediate region of noise just below the transition from isolated single well oscillations to coupled double wells oscillations. Va- riations in the mechanical displacement in this transition region indicate that the transition between these types of behaviour is broader for a uni- form noise excitation. Consequently, the system excited with Gaussian noise tends more clearly to one of the different solutions (i.e. motion in a single well or in both wells) while the uniform noise case demonstrates intermittency with multiple solutions.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Adhikari, Professor Sondipon
• Authors: Litak, G., Borowiec, M., Friswell, M. I., and Adhikari, S.
• College/School: College of Science and Engineering > School of Engineering > Infrastructure and Environment
• Journal Name: Journal of Theoretical and Applied Mechanics