Vol. 1 No. 7 (2026), Articles
Vol. 1 No. 7 (2026)

THE EFFECT OF THE FRICTION COEFFICIENT AND RADIUS OF CURVATURE ON THE CALCULATED PARAMETERS OF FRICTION PENDULUM SEISMIC ISOLATORS

Articles
Published 2026-10-11
Boltaboyev Muslimbek
Structural Designer, AKFA ASSEMBLY LLC, Tashkent, Uzbekistan
Qodirov Sardor
Assistant Lecturer, Department of Building and Structures Construction, Tashkent University of Architecture and Civil Engineering, Tashkent, Uzbekistan
Maxmudov Said
Professor, Department of Building and Structures Construction, Tashkent University of Architecture and Civil Engineering, Tashkent, Uzbekistan
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Keywords

friction pendulum, seismic isolator, kinetic friction, radius of curvature, equivalent damping, effective period, residual displacement, parametric analysis.

How to Cite

Boltaboyev Muslimbek, Qodirov Sardor, & Maxmudov Said. (2026). THE EFFECT OF THE FRICTION COEFFICIENT AND RADIUS OF CURVATURE ON THE CALCULATED PARAMETERS OF FRICTION PENDULUM SEISMIC ISOLATORS. Zamonaviy Ilmiy Yondashuvlar Va Texnologik Taraqqiyotning Ustuvor yo‘nalishlari, 1(7), 71-77. https://doi.org/10.5281/zenodo.23305146
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Abstract

The effects of the kinetic friction coefficient and the effective sliding-surface radius on the calculated dynamic parameters of single-curvature friction pendulum seismic isolators were investigated using an idealized parametric model. At a prescribed displacement amplitude of D = 0.15 m, normalized peak force, effective vibration period, and equivalent viscous damping were evaluated for nine combinations of μ = 0.04, 0.08, and 0.12 and R = 2, 3, and 4 m. The results showed that increasing friction increases the energy dissipated through hysteresis while also increasing the contribution of friction relative to the restoring force. The findings do not replace dynamic analysis of buildings using real accelerograms; rather, they provide an analytical and computational basis for the preliminary selection of seismic isolator parameters.

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References

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