Numerical modeling and experimental validation of Sliding-LRBs considering hysteretic strength degradation

Abstract

To investigate the refined hysteretic response of the Sliding-LRB subjected to cyclic loadings, an advanced numerical model with HSD is developed based on the OpenSees platform. The hysteretic performance of the Sliding-LRB is numerically investigated under cyclic loadings and validated by the experimental results accordingly. In particular, various loading conditions, e.g., vertical loading, loading frequency and shear displacement amplitude are considered to conduct the numerical study and the numerical results are compared with the experimental counterparts. The key hysteretic characteristics, including the energy dissipation in each cycle, equivalent stiffness and damping ratio, are compared to demonstrate the accuracy and effectiveness of the developed numerical model of the Sliding-LRB. Results show that the developed numerical model can effectively predict the hysteretic behavior of the Sliding-LRB under cyclic loadings, and the numerical results match well with that of the corresponding experimental values. The numerical model representations of the Sliding-LRB are then achieved based on the numerical and experimental results.