Modeling and Validation of a Passive Resettable Stiffness Damper

Walsh, Kenneth K.; Sallar, Grace; Steinberg, Eric P.

doi:10.1061/(asce)em.1943-7889.0001190

Cited by 8 publications

(8 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For a high‐frequency ratio, the CID reduces the displacement response and the acceleration response simultaneously; ie, the displacement and acceleration are reduced by approximately 44% and 30%, respectively, at an inertance‐mass ratio of β = 0.6 and a frequency ratio of Ω/ ω = 1.5. Thus, the CID would be an attractive device for structures with relatively long periods (such as base‐isolated buildings or cable‐stayed bridges). Additionally, both the displacement and the acceleration response ratios of the CID decrease as the inertance‐mass ratio β increases at frequency ratios higher than unity.…”

Section: Parameter Study Of Sdof Systems With a Cidmentioning

confidence: 99%

Displacement reduction effect and simplified evaluation method for SDOF systems using a clutching inerter damper

Wang

Sun

2018

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

Summary This study evaluates the response reduction effect of linear single degree of freedom systems with a clutching inerter damper (CID) via parametric analysis under harmonic excitations and real earthquake records. The cause of the displacement reduction effect of a CID is inherited from the inertial mass damper (IMD)—reducing the nominal load intensity by increasing the mass by inertance. Additionally, the displacement reduction effect is further enhanced by the clutching effect, which speeds up the decreasing of the velocity response from an instantaneous extremum to 0. Thus, the CID is more effective than the IMD at reducing displacement responses. For example, the displacement response for a long‐period structure with a CID can be reduced by approximately 53%, while for an IMD, it can only be reduced by approximately 24%. Additionally, the linear single degree of freedom system with a CID is a weak nonlinear system reserving homogeneity, indicating that the response reduction factor will provide enough information to reveal the seismic reduction effect of the CID and that there is no need to consider the amplitude of the input excitations. To simplify the analysis of such nonlinear systems, an equivalent linearization method and a simplified formula of displacement reduction factors for code‐based designs are proposed and validated by another independent set of records from the European Strong‐motion Database.

show abstract

Section: Parameter Study Of Sdof Systems With a Cidmentioning

confidence: 99%

Displacement reduction effect and simplified evaluation method for SDOF systems using a clutching inerter damper

Wang

Sun

2018

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

show abstract

“…In the following sections of the paper, it will be shown that the PNSD component can be designed to achieve approximately constant negative stiffness over a target structure displacement. Meanwhile, details on the RPSD component of the D‐BASED system have already been reported in previous studies by the authors, 21,23,52 and design of resettable stiffness dampers to achieve a desired effective stiffness has been reported elsewhere in the literature 13 . As a result, these details have been omitted from the paper.…”

Section: Displacement‐based Adjustable Stiffness and Energy Dissipation Systemmentioning

confidence: 99%

“…The resetting semi‐active stiffness damper (RSASD) has been studied extensively for seismic protection of structures, where its effectiveness has been demonstrated for both buildings and bridges in the presence of near‐field earthquake ground motions 1–20 . This has motivated recent research into an improved damper configuration where all the semi‐active components were replaced by a simple mechanism for achieving resetting of the damper force 21 . The resulting damper, the resetting passive stiffness damper (RPSD), represents a more reliable and robust alternative to the RSASD.…”

Section: Introductionmentioning

confidence: 99%

Resetting passive stiffness damper with passive negative stiffness device for seismic protection of structures

Walsh

Sallar

Haftman

et al. 2021

Struct Control Health Monit

Self Cite

View full text Add to dashboard Cite

Summary The objective of the present study is to investigate a new energy dissipation system that combines the positive stiffness of the resetting passive stiffness damper (RPSD) with the negative stiffness of a passive negative stiffness device (PNSD). The displacement‐based adjustable stiffness and energy dissipation (D‐BASED) system can be designed to have independent damper stiffness and energy dissipation. Equations for modeling the RPSD and PNSD components of the D‐BASED system are presented, along with an approach for designing the PNSD component. The results of laboratory experiments on a small‐scale prototype D‐BASED system are provided for validation of the concept. Numerical simulations are performed for the D‐BASED system installed in the isolation layer of a five‐story base‐isolated building subject to a suite of near‐field earthquake ground motions. The performance of the D‐BASED system with the same net stiffness, but different levels of energy dissipation, is compared with that of the RPSD alone. It is shown that increasing the RPSD‐ and PNSD‐component stiffness in the D‐BASED system results in a reduction in the peak base drift compared to the RPSD, while limiting the building story drifts. Furthermore, it is shown that increasing the RPSD‐ and PNSD‐component stiffness generally does not lead to an increase in the peak total force transmitted to the foundation. The D‐BASED system is also found to yield smaller peak story drifts and foundation forces compared to a passive linear fluid viscous damper for a long‐period base‐isolated building.

show abstract

“…Walsh et al [75] presented a resetting passive stiffness damper (RPSD) in line with modification of resetting semi-active stiffness damper (RSASD) where the feedback components of RSASD were substituted by a rack-lever mechanism, as illustrated in Fig. 8, to attain damper resetting as a function of the applied force.…”

Section: Pvc In Buildingsmentioning

confidence: 99%

“…8. RPSD configuration using the rack-lever mechanism presented by Walsh et al [75] Viscoelastic passive energy dissipation devices have been used as effective tools for earthquake-induced vibration control in buildings. Yamamoto and Sone [76] proposed a combination use of metallic yielding component with viscoelastic damper installed in three different frame systems.…”

Section: Pvc In Buildingsmentioning

confidence: 99%

Invited Review: Recent developments in vibration control of building and bridge structures

Ghaedi¹,

Ibrahim²,

Adeli³

et al. 2017

J. vibroeng.

106

View full text Add to dashboard Cite

This paper presents a state-of-the-art review of recent articles published on active, passive, semi-active and hybrid vibration control systems for structures under dynamic loadings primarily since 2013. Active control systems include active mass dampers, active tuned mass dampers, distributed mass dampers, and active tendon control. Passive systems include tuned mass dampers (TMD), particle TMD, tuned liquid particle damper, tuned liquid column damper (TLCD), eddy-current TMD, tuned mass generator, tuned-inerter dampers, magnetic negative stiffness device, resetting passive stiffness damper, re-entering shape memory alloy damper, viscous wall dampers, viscoelastic dampers, and friction dampers. Semi-active systems include tuned liquid damper with floating roof, resettable variable stiffness TMD, variable friction dampers, semi-active TMD, magnetorheological dampers, leverage-type stiffness controllable mass damper, semi-active friction tendon. Hybrid systems include shape memory alloys-liquid column damper, shape memory alloy-based damper, and TMD-high damping rubber.

show abstract

Modeling and Validation of a Passive Resettable Stiffness Damper

Cited by 8 publications

References 17 publications

Displacement reduction effect and simplified evaluation method for SDOF systems using a clutching inerter damper

Displacement reduction effect and simplified evaluation method for SDOF systems using a clutching inerter damper

Resetting passive stiffness damper with passive negative stiffness device for seismic protection of structures

Invited Review: Recent developments in vibration control of building and bridge structures

Contact Info

Product

Resources

About