APPLICATION OF TMD FOR VIBRATION CONTROL OF CHIMNEY

Many tall and overhanging structures are susceptible to vibrations. Most of industrial chimneys and steel towers are structures particularly sensitive to the dynamic effect of wind and earthquake. This vibration of structure is control by various damping devices or dissipation methods. The tuned mass damper (TMD) is widely used passive vibration damping treatment. These devices are viscously damped to 2nd order systems appended to a vibrating structure. Proper selection of the parameters of these appendages, tunes the TMD to one of the natural frequencies of the under damped flexible structure. The TMD is placed at the structure's location with the corresponding maximum of the vibration amplitude of the natural frequency. A TMD is connected to the structure at the location where a significant or the biggest vibration is occurring. The device is consisting of a moving mass, springs and a damping element The aim of this paper is to get vibration control of chimney using Tuned Mass Damper. In this paper response spectral analysis of chimney is done and displacement is calculated, then TMD is attached at the top of chimney to control displacement at top of chimney.