Experimental Analysis of Vibration Mitigation in a Composite Building Prototype Using Fluid Viscous Dampers, Phase I
Disciplines
Civil and Environmental Engineering | Mechanical Engineering
Abstract (300 words maximum)
This experimental analysis investigates the vibration characteristics of a 3-story building model, both with and without fluid viscous dampers, to enhance the integrity and stability of the structure. The composite model, constructed from steel frames and 3D-printed polymeric floors, is scaled at 1:10, with dimensions of 30 cm x 40 cm x 90 cm (approximately 11 6/8 in x 15 6/8 in x 35 3/8 in). A custom shake table has been designed to facilitate testing by allowing only reciprocating motion parallel to the ground, effectively restricting five other degrees of freedom. Two designs are considered for the dynamic motion of the shake table: one based on using slide-in wedge structures and ball bearings, and the other on the cylinder-piston function. The pros and cons of each design will be evaluated. For the model lacking fluid viscous dampers, brackets are employed to provide support, while the experimental model is designed to form a moment-resistant structure. To capture vibration data, a waveform generator, accelerometer, and vibrometer have been integrated into a data acquisition system. The scaling equations for frequency range and acceleration range for the building model are presented. The shake table will be engineered for optimal efficiency, accommodating various sizes of building models while minimizing its footprint. This research aims to establish a specialized arrangement of dampers and a new viscoelastic model, ultimately contributing to improved building design and resilience against vibrational forces. The findings from this study will have significant implications for enhancing the safety and stability of structures in seismically active regions, providing valuable insights into the application of advanced damping technologies in structural engineering.
Academic department under which the project should be listed
SPCEET - Mechanical Engineering
Primary Investigator (PI) Name
Simin Nasseri
Additional Faculty
Aaron Adams, Engineering Technology, aadam224@kennesaw.edu
Experimental Analysis of Vibration Mitigation in a Composite Building Prototype Using Fluid Viscous Dampers, Phase I
This experimental analysis investigates the vibration characteristics of a 3-story building model, both with and without fluid viscous dampers, to enhance the integrity and stability of the structure. The composite model, constructed from steel frames and 3D-printed polymeric floors, is scaled at 1:10, with dimensions of 30 cm x 40 cm x 90 cm (approximately 11 6/8 in x 15 6/8 in x 35 3/8 in). A custom shake table has been designed to facilitate testing by allowing only reciprocating motion parallel to the ground, effectively restricting five other degrees of freedom. Two designs are considered for the dynamic motion of the shake table: one based on using slide-in wedge structures and ball bearings, and the other on the cylinder-piston function. The pros and cons of each design will be evaluated. For the model lacking fluid viscous dampers, brackets are employed to provide support, while the experimental model is designed to form a moment-resistant structure. To capture vibration data, a waveform generator, accelerometer, and vibrometer have been integrated into a data acquisition system. The scaling equations for frequency range and acceleration range for the building model are presented. The shake table will be engineered for optimal efficiency, accommodating various sizes of building models while minimizing its footprint. This research aims to establish a specialized arrangement of dampers and a new viscoelastic model, ultimately contributing to improved building design and resilience against vibrational forces. The findings from this study will have significant implications for enhancing the safety and stability of structures in seismically active regions, providing valuable insights into the application of advanced damping technologies in structural engineering.