Studies on Large-Scale, Real-time Pseudodynamic Hybrid Testing
The pseudodynamic (PSD) test method is a displacement-based experimental technique that is used to simulate the seismic response of structures. It utilizes feedback signals from a test structure in a numerical integration algorithm to sequentially solve the equations of motion to determine command displacements. The command displacements are imposed on a test structure using hydraulic actuators. To avoid the fabrication and testing of the entire structure, the hybrid PSD test method is used where only a portion of the structure is experimentally tested (the experimental substructure). The experimental substructure degrees of freedom are coupled to an analytical model (analytical substructure) that represents the remaining part of the structure.