equivalent viscous damping

equivalent viscous damping

[i′kwiv·ə·lənt ¦vis·kəs ′damp·iŋ]
(mechanics)
An assumed value of viscous damping used in analyzing a vibratory motion, such that the dissipation of energy per cycle at resonance is the same for the assumed or the actual damping force.
References in periodicals archive ?
A comparison is made between Bingham plastic and Bingham bi-plastic force responses to constant velocity input, and equivalent viscous damping is examined with respect to non-dimensional parameters.
22kN/mm at a displacement of [+ or -] 130 mm, corresponding to a shear strain of 100% and equivalent viscous damping of about 15%.
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.
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 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.
The equivalent viscous damping ratio of the joints was evaluated as
The first analytical analysis of forced vibrations with friction sliding was performed by den Hartog (1931), who approximated the non-linear friction Coulomb force as an equivalent viscous damping.
Friction damping is replaced by equivalent viscous damping in model.
To carry out response spectrum analysis, effective stiffness (Keff) and the equivalent viscous damping derived from the isolator's EDC (energy Dissipated per Cycle) are essential.
This great increase however corresponded to a small increase of equivalent viscous damping ratio of the joint; the damping ratio changed from 12 percent to 14 percent due to the additional nail reinforcements.