Seismic Performance of a Proposed Combined Shear and Flexural Yielding Metallic Damper

Volume Title: ICASGE2025

Paper ID : 1122-ICASGE-FULL (R1)

Structural Engineering Department, Faculty of Engineering, Tanta University, Tanta, Egypt

Seismic design for structures introduces significant challenges in minimizing damage during earthquakes, which highlights the significant need for advanced energy dissipation solutions. Metallic dampers, typically made from steel, are defined as structural fuses (SF) that concentrate all damage within the passive energy dissipation (PED) devices, enabling the primary structure to remain elastic to enhance seismic performance by efficiently dissipating energy. This study investigates the response of hybrid metallic dampers under cyclic loading by analyzing and validating experimental data from existing research through finite element modeling (FEM). In this research, a novel shear-bending combined (SBC) metallic damper is proposed and evaluated. Firstly, various configurations from existing experimental studies in previous research were modeled, validated, and explored using ABAQUS software under quasi-static cyclic loading conditions. To study the behavior of the proposed damper, a finite element simulation analysis was conducted. Cyclic tests were conducted to evaluate the hysteretic performance, energy dissipation capacity and deformation behavior of the proposed metallic damper. Results indicate that the overall performance of the SBC damper can be greatly enhanced if the shear component and the bending component work interactively rather than independently. The damper exhibited nonlinear behavior with consistent strain hardening and maintained stability during repeated cyclic motions.

Energy dissipation; Metallic damper; Finite Element Modeling; cyclic loading; Structural fuses; Hysteretic behavior

Structural Analysis (STA)