Numerical analysis of the dynamic response of a structure equipped with friction pendulum bearings
https://doi.org/10.26907/2541-7746.2025.4.675-688
Abstract
This article focuses on the implementation of a lightweight model of a friction pendulum bearing in the finite-element model of a base-isolated structure. The proposed approach appears as an alternative to a high-fidelity finite-element model. The model considers the slider moving on the sliding surface as a material point with three degrees of freedom. The equations of motion for the slider are derived by leveraging the Lagrangian formalism. The three-degrees-of-freedom model is compared with other available analytical approaches that can be employed to define the response of friction pendulum bearings, mainly unidirectional formulations. From the numerical experiments, the dynamic response of a structure with and without base isolation is obtained using a finite-element analysis. Acceleration time series, recorded during an earthquake, are employed as an input. The numerical results, in terms of displacement and acceleration evolutions, demonstrate the positive effect of seismic isolation on mitigating the risk of failure in the structure.
About the Author
T. Zhelyazov
National Institute of Geophysics, Geodesy and Geography
(NIGGG), Bulgarian Academy of Sciences
Bulgaria
Bulgaria
Todor Zhelyazov, PhD, Researcher
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Review
For citations:
Zhelyazov T. Numerical analysis of the dynamic response of a structure equipped with friction pendulum bearings. Uchenye Zapiski Kazanskogo Universiteta. Seriya Fiziko-Matematicheskie Nauki. 2025;167(4):675-688. https://doi.org/10.26907/2541-7746.2025.4.675-688
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