Inerter-Connected Double Tuned Mass Damper for Passive Control of Buildings under Seismic Excitation

Jalali, Himan Hojat; Farzam, Maziar Fahimi

doi:10.3311/ppci.19638

Cited by 5 publications

(1 citation statement)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the other hand, the passive control system is relatively simple and economical, and it can easily be swapped when retrofitting structures after a quake. For these reasons, passive control systems are widely used in constructed structures [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Cyclic Behavior of Angled U-shaped Yielding Damper on Steel Frames

Cheraghi,

TahamouliRoudsari,

Kiasat

et al. 2023

Period. Polytech. Civil Eng.

View full text Add to dashboard Cite

Yielding dampers are often selected as a cost-effective solution for improving steel structures compared to other energy dissipation systems. The objective of this research study was to investigate the cyclic behavior of the angled U-shaped yielding damper (AUSYD) on a steel frame using numerical method. The numerical model was first verified using two experimental samples. Next, the influence of the number of dampers on the cyclic behavior of the steel frame was examined. The parametric model outcomes included energy dissipation, elastic stiffness, strength, and equivalent viscous damping ratio (EVDR). Additionally, an analytical equation was proposed for calculating the ultimate strength of the AUSYD, which correlated well with the experimentally obtained results. The study findings revealed that the increase in elastic stiffness and strength of the frame equipped with the AUSYD was nearly equivalent to the sum of the elastic stiffness and strength of the bare frame and its supplementary dampers. Furthermore, the results showed that models with 8 to 12 dampers had comparable energy dissipation and EVDR. Adding 8 dampers to the frame increased the energy dissipation and damping coefficient of the frame by 42% and 67%, respectively.

show abstract

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Cyclic Behavior of Angled U-shaped Yielding Damper on Steel Frames

Cheraghi,

TahamouliRoudsari,

Kiasat

et al. 2023

Period. Polytech. Civil Eng.

View full text Add to dashboard Cite

show abstract

Seismic control of vertically and horizontally irregular steel high-rise buildings by tuned mass dampers including SSI

Kontoni,

Farghaly

2023

Asian J Civ Eng

View full text Add to dashboard Cite

The architectural requirements imposed on the structural design of buildings sometimes necessitate vertical and horizontal irregularities with their possibly dangerous effects when these structures are subjected to earthquakes. One of the greatest challenges in structural engineering is the design of a steel high-rise building (HRB) with vertical and horizontal irregularities. In this research, two irregular steel high-rise buildings (HRBs) were seismically analyzed as 3D models considering soil–structure interaction (SSI) and tuned mass damper (TMD) systems were used to mitigate their seismic response under different earthquakes. The two studied HRBs were a vertically irregular (step-pyramid-shaped) steel HRB, and a both vertically and horizontally irregular (L-shaped in-plan, stadium-shaped) steel HRB. The SSI provides the actual response of the tall buildings subjected to earthquake, and mitigation schemes using TMDs were suggested with arrangements of the TMDs on the top plan and along the elevation of the steel high-rise buildings to achieve seismic control of these structures. The present study has shown that the best efficiency in the mitigation of the effect of earthquakes on vertically and horizontally irregular steel high-rise buildings is obtained by implementing TMDs at the corners of the HRB plan on the top of the HRB and also at different floor levels along the upper half-height of the HRB.

show abstract

Asymmetric and Cubic Nonlinear Energy Sink Inerters for Mitigating Wind-Induced Responses of High-Rise Buildings

Wang,

Wu,

Qiao

et al. 2023

Structural Control and Health Monitoring

View full text Add to dashboard Cite

Flexible high-rise buildings with low damping are prone to excessive vibration under strong wind loads. To explore a light-weight control device having desirable mitigation effects on responses and sound robustness against deviations in tuning parameters, the performance of two novel inerter-integrated nonlinear energy sinks (NESIs), i.e., asymmetric nonlinear energy sink inerter (Asym NESI) and cubic NESI, on wind-induced vibration control of super high-rise buildings is assessed in the present work. Based on the wind loads obtained from wind tunnel tests, a super high-rise building with a 300 m height is taken as the host structure in the numerical case study. The results show that Asym NESI can achieve reduction ratios of 38.5% and 11.3% on extreme acceleration and displacement, respectively, while the sensitivity indices of Asym NESI on displacement and acceleration control are only 70.5% and 62.5% of those of tuned mass damper inerter (TMDI) having identical mitigation effects. Although the sensitivity indices of cubic NESI are only 5.5% and 29.8% of those of TMDI, the moderate mitigation effects and large nonlinear stiffness ratio may prohibit its practical implementation. Overall, Asym NESI could be an alternative to TMDI due to the same mitigation effects but better robustness against possible detuning.

show abstract

Inerter-Connected Double Tuned Mass Damper for Passive Control of Buildings under Seismic Excitation

Cited by 5 publications

References 29 publications

Numerical Investigation of Cyclic Behavior of Angled U-shaped Yielding Damper on Steel Frames

Numerical Investigation of Cyclic Behavior of Angled U-shaped Yielding Damper on Steel Frames

Seismic control of vertically and horizontally irregular steel high-rise buildings by tuned mass dampers including SSI

Asymmetric and Cubic Nonlinear Energy Sink Inerters for Mitigating Wind-Induced Responses of High-Rise Buildings

Contact Info

Product

Resources

About