For each specimen, three major factors , including energy dissipation ([E.sub.h]), elastic strain energy ([E.sub.e]), and equivalent viscous damping
ratio ([[xi].sub.eq]), were calculated for each hysteric loop with MATLAB.
In this paper, Jacobson's equivalent viscous damping
coefficient is used to represent the energy dissipation capacity of the specimen .
Lin and Chang  improved ICSM by using the real absolute acceleration response spectrum instead of the pseudo-acceleration response spectrum, especially for them system with equivalent viscous damping
ratio [[beta].sub.eq] > 10% and period T > 0.15 s.
In this paper, the method generally suggested in seismic standards and codes [6,7] for estimating equivalent period and the equivalent viscous damping
ratio was applied.
The elastic response spectra at different limit states for equivalent viscous damping
ratio [xi] = 5% are shown in Figure 2(c): Frequent Design Earthquake (FDE); Serviceability Design Earthquake (SDE); Basic Design Earthquake (BDE); Maximum Considered Earthquake (MCE).
The Bingham plastic model does not account for such behavior, resulting in over prediction of equivalent viscous damping
. We present a Bingham bi-plastic model that can account for both shear thinning and shear thickening behaviors.
As mentioned above, comparative issue of energy dissipation and ratio of equivalent viscous damping
in different states of wall crater has not been studied clearly.
The equivalent viscous damping
coefficient [xi] is quantifying the hysteresis response of structural components, and as such, it is one of the key indicators describing their behavior.
Moreover, because of the significant differences between the damping and yielding reductions, the effect of yielding should explicitly be calculated by using complex 3D MDOF models instead of estimating it in terms of equivalent viscous damping
. The findings of this paper are for the particular structural systems, models, and earthquakes used in the study.
ABSTRACT: In this paper, results of an experimental study to investigate the equivalent viscous damping
(EVD) of the concrete reinforced with metallic fibers in mono and hybrid form have been presented.
The demand associated with the ground motion is represented by a combined elastic Acceleration and Displacement-Response Spectrum (ADRS) curve for various levels of equivalent viscous damping
The effect of geometry and extent of gravity load on various parameters used to quantify seismic performance such as equivalent viscous damping
for evaluating energy dissipation capacity, ultimate ductility and drift ratio of the walls is examined and discussed.