Active vibration control of carbon nanotube-reinforced composite beam submerged in fluid using magnetostrictive layers

In this article, vibration analysis of a beam-fluid coupled system was performed and then, employing magnetostrictive layers, vibration amplitude of the cantilever beam was controlled according to a closed-loop velocity proportional feedback control (CLVPFC) approach. The beam was composed of functionally graded carbon nanotube-reinforced sandwich composite (FGCNTRC) materials. The fluid was assumed to be incompressible, inviscid, and irrotational. The equation of motion of coupled fluid-structure system was solved by combining two analytical and Galerkin methods. To verify the stability and accuracy of solution procedure, convergence and comparison studies were presented. The effects of various parameters such as fluid depth, length of the beam, and distribution type of the carbon nanotubes (CNTs) on controlled and uncontrolled vibration amplitudes were investigated. Communicated by Dr. Krzysztof Kamil Zur

Automated summary

This article investigates the vibration analysis of a beam-fluid coupled system and the control of cantilever beam's vibration amplitude using magnetostrictive layers and a closed-loop velocity proportional feedback control approach. The coupled fluid-structure system's equation of motion is solved using analytical and Galerkin methods, and convergence and comparison studies are presented to verify the stability and accuracy. The effects of various parameters on the controlled and uncontrolled vibration amplitudes, such as fluid depth, beam length, and distribution type of carbon nanotubes, are investigated.