Finite Element Simulation-Based Investigation of Mechanical Properties in High-Damping Seismic Isolation Rubber Bearings
DOI:
https://doi.org/10.62051/q893yw38Keywords:
High-damping rubber isolators; finite element modeling; hysteresis performance; isolation technology.Abstract
Seismic isolation bearing technology serves as a critical method for enhancing the seismic performance of building structures and possesses significant application value. This study focuses on Natural Rubber Bearings (NRB) and High-Damping Rubber Bearings (HDRB). Using the Abaqus finite element simulation platform, detailed numerical models of the bearings were developed, with the hyperelastic behavior of the rubber material characterized by the Mooney-Rivlin constitutive model. The accuracy of the models was validated through comparison with experimental data, showing a deviation in vertical stiffness of less than 1%. Building on this validation, the research comprehensively analyzes the hysteretic behavior of HDRB under shear loading, its force-displacement characteristics under compressive stress, and its dynamic response under seismic excitation. Results demonstrate that HDRB retains the advantageous elastic recovery capacity and durability inherent to NRB, while significantly improving energy dissipation efficiency through the incorporation of damping compounds, making it particularly suitable for high seismic demand scenarios. This study provides a theoretical foundation and numerical reference for the optimized design of isolation bearings. It also suggests directions for future research, including material enhancements and investigations into performance across varied environmental conditions.
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