Vibration suppression of a thermoelastic FGM beam subjected to follower force

Abstract

Purpose

The purpose of this paper is to analyze and control the flutter vibrations of a thermoelastic functionally graded material (FGM) beam subjected to follower force using the piezoelectric sensors/actuators.

Design/methodology/approach

The beam is made of FGM properties which are functionally graded in the thickness direction according to the volume fraction power law distribution and change with temperature. As the two sides of the beam are located in two different temperatures, the thermoelastic effects are considered in the governing equation of motion. The beam is fixed from one end and a follower force is applied to the free end of it. An active control is applied to the system to suppress the flutter vibration of the beam.

Findings

After the simulation, the effects of the temperature gradient, magnitude of the follower force and piezoelectric lengths on the dynamic stability and the response of the system are studied. Simulation results show that the vibration of the system has been damped rapidly by applying the controller to the system.

Originality/value

Stability analysis and robust control of a thermoelastic FGM beam subjected to a follower force using piezoelectric sensors and actuators is the novelty of this study.

Citation

Azadi, M. (2018), "Vibration suppression of a thermoelastic FGM beam subjected to follower force", Aircraft Engineering and Aerospace Technology, Vol. 90 No. 9, pp. 1317-1325. https://doi.org/10.1108/AEAT-05-2016-0089