The effect of vibration source and tuned mass damper distance from center of gravity to the vibration responses of a 2DOF system

Tuned Mass Damper (TMD) has been studied widely to reduce vibration.This paper discussed the effect of vibration source and TMD distance from the center of gravity (COG) to the vibration responses of a 2DOF main system. The system was mathematically modeled and simulated. The simulation results were verified experimentally and analyzed. The valid model was used to simulate the vibartion responses and vibration reduction of the 2DOF main system due to variation of the vibration source distance and TMD distance from the COG. The best performance of TMD in reducing translational vibaration obtainedat frequency range of 11,6 to 14,8 Hz. Maximum reduction of translational vibration 94,56 % and rotational vibration 0% is obtained at its natural frequency (12,9 Hz) when TMD is located at the COG of the main system, with source of vibration distance from the main system's COG of 0,12 m. Whereas maximum reduction of translational vibration 94, 81 % and rotational vibration 79, 48 % is obtained at its natural frequency (12,9 Hz) when TMD is located at the COG of the main system, with source of vibration distance from the main system's COG of 0, 148 m.The simulation and experiment are in a good agreement with error ranging from 5% to 15%.