Effectiveness of Steel Ring Damper (SRD) to Absorb Energy and to Reduce Responses of Structure due to Dynamic Loading

Abstract Dynamic loads are common mechanical phenomena affecting many structural systems and components. When exposed to these loads, structures experience vibrations that can cause progressive damage over repeated cycles. To minimize this effect, dampers are often used to reduce the risk of structural failure. Among various types, metallic dampers are widely applied due to their excellent energy absorption and dissipation capabilities. One notable example is the Steel Ring Damper (SRD), which operates through the deformation of a steel ring under cyclic loading. When subjected to dynamic excitation, the SRD effectively dissipates energy and reduces vibration amplitude. In this study, nine SRD models were analyzed using the Finite Element Method (FEM) under static and dynamic conditions. Static analysis produced hysteresis curves from tensile and compressive loading cycles, enabling evaluation of stiffness, energy dissipation, and damping performance. Dynamic analysis was performed on a 2D frame structure equipped with the SRD, using computational simulations to obtain time– response graphs under dynamic loading. Results showed that SRD Model 9 had the highest energy dissipation of 20.99 kN·m. In the frame analysis, Model 9 reduced displacement to 4.33 mm for Type 1 and 4.77 mm for Type 2 bracing members, demonstrating superior vibration mitigation compared to frames without SRDs.