Part of #Tuned Liquid Column Damper for Controlling Non-Linear Friction Driven Oscillator# :
Publishing year : 2012
Conference : 20th Annual Conference of Mechanical Engineering
Number of pages : 4
Abstract: In this paper, we study the dynamic behavior of a block-on-belt system subjected to harmonic external excitations. The block is attached to a fixed support through a non-linear spring and linear viscous damper. The belt moves over a pair of pulleys, one of which is driven by a non-ideal motor. Investigation of the oscillations of the block through the variation of the excitation frequency, shows that the system presents some interesting nonlinear phenomena near the fundamental resonance region, including multi-periodic and chaotic motion. When the effect of the static and dynamic friction is considered, and the mass of the mass block is the same as the band, there is no sliding or stick phenomenon and oscillating system is excited or damped by static friction with greater intensity. The control of the chaotic motion of this system using Tuned liquid column dampers (TLCD) is analyzed. The response of the system is studied through a wide range of length ratios of the U-tube. Our numerical results suggest that Tuned liquid column dampers with a specific length ratio are effective in suppressing chaos and the response of the system lies in periodic oscillations.