The Equivalent Viscous Damping (EVD) parameter is used to simplify the dynamic problem, passing from a non-linear solution of the system to a simple linear-elastic one. In the case of Direct Displacement-Based seismic Design (DDBD) methods, the EVD value allows direct design of structures, without an iterative computational process. This paper proposes a rational analytical formula to evaluate the EVD value of timber structures with dowel-type metal fastener connections. The EVD model is developed at the ultimate limit state, as a solution of the equilibrium problem related to an inelastic configuration. For a specific joint configuration, the EVD predicted via an analytical model was compared to experimental results. The proposed EVD model was validated using non-linear dynamic analysis on a portal frame, built with dowel-type fasteners arranged in two concentric crowns.
|Titolo:||Analytical Model to Evaluate the Equivalent Viscous Damping of Timber Structures With Dowel-Type Fastener Connections|
|Autori:||Loss, Cristiano; Piazza, Maurizio; Zonta, Daniele|
|Titolo del volume contenente il saggio:||World Conference on Timber Engineering 2012|
|Luogo di edizione:||Auckland|
|Anno di pubblicazione:||2012|
|Codice identificativo Scopus:||2-s2.0-84871966812|
|Appare nelle tipologie:||04.1 Saggio in atti di convegno (Paper in proceedings)|