In addition, someĮmpirical models have been proposed based on the results of time-historyĪnalyses and physical experiments. The EVD properties of nonlinear viscous dampers. Ratio considering the energy absorption efficient factor which reflects proposed a formulation of the equivalent damping derived an equation of theĮquivalent damping ratio based on the Takeda hysteretic model. This equation has beenĪdopted by ATC-40 and FEMA 440 for pushover analysis of RC defined the secant stiffness at the maximum deformation as the basisįor selecting period shift, in which the EVD ratio equation was derivedīased on the ratio between the elastic stored energy and the dissipatedĮnergy by the elastoplastic hysteretic model. Models for estimating the energy dissipation capacity of RC structuresĪnd members subjected to seismic excitations. Researchers have studied this concept and proposed different EVD ratio Since the equivalent damping approach was proposed, extensive Steady-state response of the nonlinear system to that of the equivalent Ratio is determined by equating the energy dissipated in one cycle of a In his pioneering study, Jacobsen proposed that the EVD Issues in the DBD procedure is the accurate estimation of EVD of theĮquivalent linear systems. Structures is often modeled by the maximum elastic displacement of theĮquivalent linear system based on the concept of effective stiffness andĮquivalent viscous damping (EVD) ratio. Procedure, the inelastic displacement demand of nonlinearly damped Generally accepted by researches and engineers. To better control the inelasticĭisplacements and decrease the damage losses due to earthquakes, aĭisplacement-based design (DBD) approach has been developed and Retrieved from Įarthquake reconnaissance indicates that the structural damage ofīuildings and bridges is more related to relative inelasticĭisplacements than to forces. APA style: Equivalent Viscous Damping Ratio Model for Flexure Critical Reinforced Concrete Columns.
Equivalent Viscous Damping Ratio Model for Flexure Critical Reinforced Concrete Columns." Retrieved from
Critical combined loading for flexture column free#
MLA style: "Equivalent Viscous Damping Ratio Model for Flexure Critical Reinforced Concrete Columns." The Free Library.
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