Scale Effects in High Damping Rubber Bearings Under Large Displacements and High Velocities

In this study, we conducted dynamic performance tests on High Damping Rubber Bearings (HDRs). Test specimens were a full-scale HDR with a rubber outer diameter of 1,500mm and a scaled HDR with a rubber outer diameter of 225mm. Both specimens were loaded under standard compressive stress or almost zero compressive stress up to a shear strain of 350% and a shear strain rate of 668%/s. The Dynamic performances of both specimens showed good agreement regardless of compressive stress. Therefore, it was confirmed that the scale effects on dynamic performance are small, independent of compressive stress magnitude and loading velocities.