Response Reduction of Two DOF Shear Structure Using TMD and TLCD by Considering Absorber Space Limit and Fluid Motion

Son, Lovely; Bur, Mulyadi; Rusli, Meifal

doi:10.4028/www.scientific.net/amm.836.251

Cited by 6 publications

(8 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because of the TLCD performance also ICoSE Conference Proceedings depends on the fluid natural frequency, the experiments are conducted for several fluid levels. According to theoretical analysis [5], the fluid level is one of the dynamic parameters which affects the TLCD natural frequency. The reference level is denoted as the optimum fluid level which theoretically calculated [7].…”

Section: Resultsmentioning

confidence: 99%

“…The passive DVA performance is greatly depend on the selection of the damper natural frequency and damping factor. In TLCD, the natural frequency can be varied by adjusting the column dimensions or the liquid level inside the damper [5]. Meanwhile, TLCD damping is affected by the degree of turbulence flow of the fluid due to TLCD column junction and the built in orifice.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of TLCD Damping Factor from FRF Measurement Due to Variation of the Fluid Viscosity

Son¹

2016

KEG

Self Cite

View full text Add to dashboard Cite

Tuned Liquid Column Damper (TLCD) has become an alternative solution for reducing low frequency vibration response of machines and structures. This is not surprisingly that the damper has simply structure and low maintenance cost. The main disadvantage of using TLCD is the complexity in controlling TLCD damping factor experimentally. Theoretically, damping factor can be controlled by adjusting the orifice dimension. However, this method is time consuming and not appropriate conducted in the real application. A more simply method for adjusting TLCD damping factor is by varying the fluid viscosity. This research is aimed to evaluate the effect of fluid viscosity to the damper performance. Two DOF shear structure with TLCD is used as the experimental model. Several TLCD fluids with different viscosity are evaluated. Evaluation of TLCD damping factor due to variation of the fluid viscosity is conducted by comparing the Frequency Response Function (FRF) obtained from the experimental data.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of TLCD Damping Factor from FRF Measurement Due to Variation of the Fluid Viscosity

Son¹

2016

KEG

Self Cite

View full text Add to dashboard Cite

show abstract

“…The floor mass and beam used in the experiment are made of steel whereas TLCD absorber is made of acrylic plate. The structural parameter values are the same as those used in the previous simulation study [14]. Because of m f1 = m f2 = m f then the characteristic equation of the system as expressed in Eq.…”

Section: Methodsmentioning

confidence: 99%

“…The damping factor of the TLCD should be set to an optimal value to maximize effectiveness. Many studies have been conducted to obtain the optimum TLCD parameters using analytical methods [13] or numerical optimization technique [14]. However, even though several TLCD models have been proposed and many optimization algorithms have been developed, less study has been done to evaluate the TLCD damping factor experimentally.…”

Section: Introductionmentioning

confidence: 99%

Empirical Evaluation of Variation of Orifice Blocking Ratio in a Tuned Liquid Column Damper using Frequency Response Function Measurement

Son¹,

Marshal²,

Bur³

2018

International Journal on Advanced Science, Engineering and Information Technology

Self Cite

View full text Add to dashboard Cite

Tuned liquid column damper (TLCD) is a simple technique used to increase the structure resistance to the external load. This type of damper can effectively decrease the structure response when the TLCD parameters such as the natural frequency and damping factor are well selected. Even though several TLCD models have been proposed and many algorithms to optimize the TLCD parameters have been developed. However, it is very little research has been conducted to evaluate the TLCD damping factor experimentally. A simple empirical method for adjusting the TLCD damping factor is by varying the orifice-blocking ratio. In this research, 5 types of blocking ratio were trialled in the TLCD. They were without orifice and with 2, 4, 6 and 8 18 mm diameter orifices. The TLCD is positioned on the second floor of a Two-DOF shear structure. A frequency response function showing the ratio between the response magnitude and the excitation force on the structure in the frequency domain was recorded for each trial. The results show that the TLCDs with orifices damped vibrations more effectively than the one without orifice. The larger the blocking ratio, the larger the TLCD damping factor. Two 18 mm orifices were insufficient to damp the vibration as the blocking ratio is too large and TLCD is less responsive to the vibrations. The optimum condition of a U-Shaped TLCD blocking ratio was found to be 70.77% which corresponded to 4 holes of 18 mm orifice diameter. This type of TLCD dampened up to 80.04% of the vibration magnitude.

show abstract

“…DVA is a vibration system which is added to the primary structure for reducing the vibration response of the system at a predetermined frequency range. This method usually used to suppress the excessive vibration response of the structure near its natural frequency [6], [7], [8], [9]. The DVA can effectively reduce the vibration response of the main system when its parameters are optimally designed.…”

Section: Introductionmentioning

confidence: 99%

Vibration Response Suppression of Space Structure using Two U-Shaped Water Container

Son

Bur

Satria

2018

Int. J. Adv. Sci. Eng. Inf. Technol.

Self Cite

View full text Add to dashboard Cite

Nowadays, a passive vibration control technique using dynamic vibration absorbers (DVA) has drawn many researchers' attention in the structural dynamic field. The reason is that this technique is simple and it can work effectively in reducing the vibration response when its parameters are optimally designed. The DVA fundamental concept is the addition of a new vibration system to the primary system. This new system addition causes reduction of the vibration response of the primary system during excited by a dynamic load. One simple technique to realize the DVA for structural application is by using water vibration. This research is aimed to develop one type of dynamic vibration absorber using the water vibration system in a U-shaped container for a two-story building structure model. Besides being used as the dynamic absorber, this U-shaped container is also functioned as the water storage tank in the building. Regarding reduce the first bending mode response of the structure in x-z and y-z plane, two Ushaped water storage tanks are placed on the upper floor of the building. The dimensions of the water storage tanks are designed so that the natural frequency of moving water in the tank is the same as the natural frequency of the first bending mode of the structure in x-z and y-z plane. The performance of dynamic absorber is evaluated by applying the impulsive and seismic loads on the building. The simulation results show that the U-shaped water storage tank placed on the upper floor of the building can reduce the response amplitude of the structure under impulsive loads. Meanwhile, for the seismic load case, the performance of dynamic absorber is clearly seen when the excitation frequency is close to the natural frequency of the building structure.

show abstract

Response Reduction of Two DOF Shear Structure Using TMD and TLCD by Considering Absorber Space Limit and Fluid Motion

Cited by 6 publications

References 3 publications

Evaluation of TLCD Damping Factor from FRF Measurement Due to Variation of the Fluid Viscosity

Evaluation of TLCD Damping Factor from FRF Measurement Due to Variation of the Fluid Viscosity

Empirical Evaluation of Variation of Orifice Blocking Ratio in a Tuned Liquid Column Damper using Frequency Response Function Measurement

Vibration Response Suppression of Space Structure using Two U-Shaped Water Container

Contact Info

Product

Resources

About