| 英文摘要 |
High-damping rubber(HDR) bearings are a common isolator used in seismic isolation systems. Because of the complex rubber compound, the mechanical properties of HDR bearings are highly nonlinear, such that the existing bilinear analytical model may not be appropriate for describing their hysteresis behavior. A mathematical model regarding the shear force experienced by HDR bearings as a combination of the restoring force and damping force was developed in previous research to characterize the hysteresis behavior of HDR bearings. However, it was found that different load patterns or displacement and velocity responses of HDR bearings have a significant influence on the mathematical modeling of their hysteresis behavior. In this research, the proposed mathematical model is further investigated and modified on the basis of sinusoidal and triangular cyclic loading tests on HDR bearings. By comparing the analytical predictions to the experimental results, the accuracy of the model calibration is discussed. |
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