Title :
Using magnetorheological(MR) fluid as distributed actuators for smart structures
Author_Institution :
Sch. of Mech. Eng., Adelaide Univ., Adelaide, SA, Australia
Abstract :
An aluminium sandwich beam structure embedded with MR fluids was designed as a new type of distributed active vibration absorber to suppress unwanted structural vibrations. Based on the Kelvin-Voigt model and Hamilton principle, an analytical model for the MR sandwich beam is introduced in this paper. The relationship between the magnetic field and the complex shear modulus of the MR sandwich beam in the pre-yield regime is presented. The governing partial differential equations describing the dynamics of the MR sandwich beam are derived and a model analysis is performed. An active structural vibration controller based on Lyapunov stability theory is designed. Simulations show the stable response and improved transient performance provided by the MR fluid damper.
Keywords :
Lyapunov methods; actuators; beams (structures); fluids; intelligent materials; magnetorheology; partial differential equations; structural engineering; vibrations; AlJkJk; Hamilton principle; Kelvin-Voigt model; Lyapunov stability; aluminium sandwich beam structure; distributed active vibration absorber; distributed actuator; magnetorheological fluid; magnetorheological sandwich beam; partial differential equations; pre yield regime; smart structures; Aluminum; Analytical models; Fluid dynamics; Intelligent actuators; Intelligent structures; Magnetic analysis; Magnetic fields; Partial differential equations; Performance analysis; Vibration control; MR fluid; active vibration control; smart materials and structures;
Conference_Titel :
Industrial Electronics and Applications, 2009. ICIEA 2009. 4th IEEE Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4244-2799-4
Electronic_ISBN :
978-1-4244-2800-7
DOI :
10.1109/ICIEA.2009.5138393
