Performance of viscous plane damper with box barrel as a vibration dissipation device

Recently, many advanced energy dissipation technologies have been developed to be implanted in structures to diminish the structural vibration due to earthquake, wind, or any other sources. The viscous plane damper has currently been proven as an advantageous supplementary damping device which can be implemented to the new or existing structures to dissipate effect of imposed dynamic loads to the structures. However, the typical viscous dampers are designed requires an adequate space within the structure bays which this issue caused challenges of implementing damper device in the small, limited spaces. Therefore, this study proposes a new viscous plane damper device to address the limitations of a conventional viscous damper device. The new configuration and arrangement. The proposed viscous plane damper is comprised of cube cylinder. The rectangular of piston plate with orifices which connected with the piston rod to the head mounting to transfer the external movement to the rectangular piston plate. Therefore, flowing of viscous oil through orifices of rectangular piston plate during movement which transferred by piston rod is lead to drop pressure and flow resistant that generate damping force due to function of viscous plane damper. The numerical simulation of the new viscous plane damper has been analysed by aid of computational fluid dynamic analysis was conducted to determine the characteristic of the fluid flow pattern and evaluate performance of the damper. The flow pattern characteristics based on different consideration dimensions, configurations and arrangements of orifice and velocity of the fluid. Beside the numerical analysis, the design of viscous plane damper has improved and prototype of viscous plane damper fabricated and experimental testing has been carried out by applying cyclic load using dynamic actuator to evaluate the functionality and performance of the developed damper. Experimental study consisted of parametric study on geometry specification on developed system with pseudo dynamic tests on different dimension, configuration and arrangement of orifice and velocity of the piston plate. The results of testing and computational fluid dynamics proved the functionality of the developed plane fluid damper device in generating desirable damping force during the applied cyclic load. Moreover, the results revealed that, as expected, the smaller orifice led to higher damping force. Therefore, the output of this study indicate that the new plane fluid damper device can be implemented in a vast range of newly designed or existing structures to dissipate the vibration effects in the extreme conditions

Text 114753.pdf Download (1MB) Official URL or Download Paper: http://ethesis.upm.edu.my/id/eprint/18184

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