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All Journal Civil Engineering Dimension
Andika Monanta Emilidardi
Universitas Gadjah Mada
Civil Engineering, Building, Construction & Architecture

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Experimental Study on the Hysteretic Behavior of Tempered Steel Helical Dampers Melania Anggita Harkristuti; Henricus Priyosulistyo; Angga Fajar Setiawan; Andika Monanta Emilidardi
Civil Engineering Dimension Vol. 28 No. 2 (2026): SEPTEMBER 2026
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/ced.28.2.264-275

Abstract

Structural mitigation is a key strategy for reducing earthquake-induced property damage and casualties. Among various mitigation measures, dampers are widely used to enhance structural energy dissipation. This study proposes a heat-treated steel helical spring damper to improve damping performance. The dampers were fabricated from mild reinforcing steel bars with diameters of 6, 10, and 12 mm and different numbers of coils. An annealing process was applied to reduce the steel yield strength. The specimens were subjected to displacement-controlled sinusoidal cyclic loading to evaluate stiffness, strength, energy dissipation, and equivalent viscous damping ratio (EVDR). The results showed that reducing yield strength through annealing increased the EVDR by approximately 2.6%. Furthermore, larger coil diameters provided higher load-carrying capacity and greater energy dissipation. Conversely, increasing the number of coils reduced energy dissipation because of lower stiffness and larger yielding displacements within the applied loading range.
Co-Authors Angga Fajar Setiawan Henricus Priyosulistyo, Henricus Melania Anggita Harkristuti