Numeric Comparisons on the Mechanical Behavior of Some Metallic Yielding Type Hysteretic Energy Dissipation Device Components

Abstract

Energy dissipation and use of this concept in the form of a variety of devices with differentmechanical and dynamic properties are representing state of the art approach of engineering and design, to reach targeted seismic resilience for structures. There are various methods of adding extra damping to structures that may be used to reduce structural and non-structural damage. Metal yielding type damping systems are sometimes selected among many other alternatives because they have stable hysteretic behavior characteristics, they are less affected by environmental factors, and they clearly have less cost in comparison to other types of damping systems. To use metallic yielding dampers in the seismic design of structures, detailed mechanical behavior of these fuse elements must be known very well. This FEM based numerical modelling study will concentrate on optimization for energy dissipation. Specially designed and detailed various geometries of a metallic fuse elements will be used, that will be sacrificed before the structure is damaged and will convert seismic energy into various other energies and will help to reach resilience targets. Numerical comparisons of the mechanical behavior (yield deformation, ultimate deformation capacity, absorbed energy and effective stiffness) of metallic yielding damper components of triangular plate and X-type plate will be given and results will be discussed, to reach resilience objectives.