Development and Validation of a Nonlinear Model to Describe the Tension–Compression Behavior of Rubber-Like Base Isolators
Publication: Journal of Engineering Mechanics
Volume 149, Issue 2
Abstract
The fractional-order derivative Zener (FDZ) model can reasonably predict the frequency dependence behavior of rubber-like materials. However, its capability to capture nonlinear behaviors is limited. In our previous work, we built a horizontal shear model of a multidimensional rubber-like base isolation bearing, modifying the FDZ model to compensate for its inability to reproduce the nonlinear behaviors of amplitude dependence and slow stabilization. In this paper, the tension-compression behavior of the same bearing in the vertical direction is studied, where strain-stiffening nonlinear behavior is exhibited. A different strategy is used to establishing the modified tension-compression FDZ (CFDZ) model, which is shown to have good agreement with experimental results. State-space representation of the CFDZ model is presented and included in modelling a train-bridge-bearing system for dynamic analysis. Simulation results demonstrate that the proposed bearing achieves a high base isolation performance in the vertical direction.
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Data Availability Statement
All data, models, and codes that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The authors express their appreciation for the financial support from National Key Research and Development Plans with Grant No. 2019YFE0121900, Changjiang Scholar Program of Chinese Ministry of Education, and the Tencent Foundation through the XPLORER PRIZE. Support for Daniel Gomez is provided by the Universidad del Valle, Colombia.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 149 • Issue 2 • February 2023
Copyright
© 2022 American Society of Civil Engineers.
History
Received: May 5, 2022
Accepted: Oct 11, 2022
Published online: Nov 25, 2022
Published in print: Feb 1, 2023
Discussion open until: Apr 25, 2023
ASCE Technical Topics:
- Analysis (by type)
- Base isolation
- Compression
- Continuum mechanics
- Dynamic analysis
- Dynamic models
- Dynamics (solid mechanics)
- Earthquake engineering
- Engineering fundamentals
- Engineering materials (by type)
- Engineering mechanics
- Geotechnical engineering
- Material mechanics
- Material properties
- Materials engineering
- Models (by type)
- Nonlinear response
- Rubber
- Seismic design
- Solid mechanics
- Structural behavior
- Structural dynamics
- Structural engineering
- System analysis
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