Vibration of porous beams with embedded piezoelectric sensors and actuators

Della, C. and Shu, D. W. (2015) Vibration of porous beams with embedded piezoelectric sensors and actuators. 18th International Conference on Composite Structures (ICCS18), Lisbon, Portugal, 15-18 Jun 2015.

Abstract

A micromechanics-based method is proposed to study the vibration of porous beams with embedded piezoelectric sensors and actuators. The proposed method is a two-step process. First, the porous polymer matrix is analyzed using the classical Mori-Tanaka method. Next, the piezoelectric sensors and actuators embedded in the porous beam are analyzed using Eshelby’s equivalent inclusion method. The natural frequency of the beam is determined from the variational principle in Rayleigh quotient form. In addition, the Euler-Bernoulli beam theory and Rayleigh-Ritz approximation technique are used in the analysis. A parametric study is conducted to investigate the influence of the volume fraction, shape and orientation of the pores on the natural frequency of the beam. The results of the study show that the presence of porosity can significantly affect the natural frequency of the beam.

• Item Type: Conference or Workshop Item
• Status: Published
• Refereed: No
• Glasgow Author(s) Enlighten ID: Della, Dr Christian
• Authors: Della, C., and Shu, D. W.
• Subjects: T Technology > TJ Mechanical engineering and machinery
• College/School: College of Science and Engineering > School of Engineering