A NEW MODEL PROPOSAL for STEEL DAMPERS DESIGNED to SEISMIC ENERGY DISSIPATION


Özbayrak A., Çelik A. İ.

6. ULUSLARARASI MUHENDİSLİK MİMARLIK VE TASARIM KONGRESİ, İstanbul, Turkey, 17 - 18 December 2020, vol.39, pp.880-887

  • Publication Type: Conference Paper / Full Text
  • Volume: 39
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.880-887

Abstract

 Earthquakes during ground motions load structures a significant amount of displacement en-

ergy. By using energy-damping steel elements, it is possible to dissipate most of the earthquake-induced 

energy in buildings. Within the scope of the study, a new energy dissipating steel damper model devel-

oped. The developed model was named as Energy Dissipating Steel Bean (EDSB). The strength and 

behavior of steel beans with 3 mm, 5 mm, 8 mm and 18 mm thickness under the effect of shear were 

investigated numerically by means of ANSYS program which can compute according to finite element 

method. Shear force strengths, hysterical curves and energy dissipation values under the effect of cyclic 

repetitive loads with displacement control were found according to the FEMA 461 specification. EDSB 

dampers were subjected to an ultimate deformation of 250 mm during numerical studies using a struc-

tural steel material with a yield strength of 350 N/mm2 and tensile strength of 430 N/mm2. "Kinematic 

hardening model" was chosen as the most suitable model for cyclic loading in the analyzes made in 

ANSYS program. At the end of the study, findings such as average load strength, load-displacement 

relationships, elastic stiffness, secant stiffness and effective stiffness were obtained. Thanks to these 

findings, yield displacements, ductility and energy dissipation values of EDSBs of different thicknesses 

were determined. It is predicted that if EDSB dampers are used in the future, major damages that may 

occur in buildings under the effect of severe earthquakes can be prevented.