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PRJ-3649 | Characterization of Rolling Pendulum Isolation Bearings
PI
Project TypeExperimental
Natural Hazard Type(s)Earthquake
Awards
RII Track-4: Quantifying Seismic Resilience of Multi-Functional Floor Isolation Systems through Cyber-Physical Testing | NSF-OIA-1929151
CAREER: Mitigation of Seismic Risk to Critical Building Contents via Optimum Nonlinear 3D Isolation | NSF-CMMI-1943917
Analysis and Design of a Nonholonomic, Impact-Based, Dual-Mode Vibration Isolator/Absorber System | NSF-CMMI-1663376
Related Work
KeywordsSeismic Isolation, Rolling Pendulum Bearing, Floor Isolation System, Characterization, Rolling Resistance, NHERI Lehigh EF
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Description:

Rolling pendulum (RP) isolation bearings are commonly used in seismic isolation systems for the protection of sensitive building contents. We conducted a study at the Natural Hazards Engineering Research Institute (NHERI) Experimental Facility (EF) at Lehigh University, which involved experimental tests of full-scale RP isolation bearings with different surface treatment thicknesses. The specific goals of the study were to characterize the RP bearings and to assess their performance for use in a floor isolation system (FIS) considering coupling with (i) rigid or flexible equipment mounted on the FIS and (ii) the building in which the FIS is installed. The complete study includes: (1) Characterization tests of the RP isolation bearings; (2) Real-time hybrid simulation (RTHS) tests of the RP isolation bearings incorporating (a) FIS-equipment interactions and (b) building-FIS interactions. This data publication corresponds to the characterization tests. The RTHS tests will be published in the coming months as a hybrid simulation and linked to this publication. All the details regarding the experiment and the data organization and naming are in the Data Report. Additional information on the study, along with details on the data processing and validation, is available in Related Work (Covarrubias Vargas, 2021; Covarrubias Vargas et al., 2022). The experimental data published here can be used by others to validate mathematical models of RP bearings or evaluate computer vision algorithms for displacement measurement.

Experiment | Characterization Tests of Rolling Pendulum Isolation Bearings with Different Surface Treatments
Cite This Data:
Harvey, P., B. Covarrubias Vargas, L. Cao, J. Ricles (2022). "Characterization Tests of Rolling Pendulum Isolation Bearings with Different Surface Treatments", in Characterization of Rolling Pendulum Isolation Bearings. DesignSafe-CI. https://doi.org/10.17603/ds2-5je0-5f35

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Author(s); ; ;
FacilityReal-Time Multi-Directional (RTMD) Experimental Facility with Large-Scale Hybrid Simulation Testing Capabilities - LeHigh University
Experiment TypeCharacterization
Equipment TypeSmall-Scale, Real-Time/Hybrid Capable Servo-Hydraulic Actuator System
Date of Experiment2020-08-26 ― 2020-09-03
Date Published2022-11-11
DOI10.17603/ds2-5je0-5f35
License
 Open Data Commons Attribution
Description:

Rolling-pendulum (RP) isolation bearings with different surface treatments were tested under quasi-static, harmonic, and simulated earthquake-induced motions. These tests were used to characterize the behavior of the RP bearings, including the gravitational restoring force and the rolling resistance associated with the elastomeric coatings of different thicknesses. The experimental data from analog sensors and cameras is archived here, as documented in the data report.

                                    • Data Depot | DesignSafe-CI