Rod-connected welded-plate flexural yielding damper with enhanced post-yielding stiffness and replaceability
Structures, cilt.94, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 94
- Basım Tarihi: 2026
- Doi Numarası: 10.1016/j.istruc.2026.113328
- Dergi Adı: Structures
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Anahtar Kelimeler: Braced frame, Damper, Experimental testing, Finite element analysis, Threaded rod, Time-history analysis
- Orta Doğu Teknik Üniversitesi Adresli: Evet
Özet
This paper introduces a rod-connected welded-plate flexural yielding damper (RCWPFYD), designed to be installed at the ends of diagonal braces for energy dissipation. The proposed damper is a modified version of the classical welded-plate flexural yielding damper (WPFYD), incorporating threaded rods to connect one end of the flexural yielding plates, while the opposite ends are joined by welding. This innovative configuration was specifically developed to enhance the post-yield stiffness and replaceability of the conventional WPFYD. The performance of the proposed damper was evaluated through a combined experimental and numerical investigation. The experimental program included full-scale testing of six component specimens and one sub-assemblage specimen. The key parameters examined were the number and length of yielding plates, rod configuration, and steel grade. Test results demonstrated that the RCWPFYD achieved substantial yield and ultimate strengths—up to 586 kN and 916 kN, respectively—and sustained large deformation demands exceeding 50 mm. The sub-assemblage test further confirmed that the braced system equipped with RCWPFYD can accommodate story drifts greater than 3.91%, compared to 2.63% reported for the conventional WPFYD. Additionally, the proposed damper exhibited greater post-yield stiffness than the classical configuration. A finite element parametric study was conducted to further investigate the behavior of the damper. Based on theoretical analysis and finite element results, design expressions were developed for yield resistance, initial stiffness, and displacement capacity. Finally, time-history analyses of a typical chevron-braced frame equipped with the proposed dampers were performed using OpenSees software. The results indicated that the residual drifts of frames were significantly reduced when RCWPFYDs were used in place of traditional WPFYDs.