A critical look into Rayleigh damping forces for seismic performance assessment of inelastic structures

TLDR: In this article, discrepancy forces are introduced in the framework of computational dynamics and damping forces are presented as a model of these so-called discrepancy forces to represent internal energy dissipation.

About: This article is published in Engineering Structures.The article was published on 2014-11-01 and is currently open access. It has received 18 citations till now. The article focuses on the topics: Dissipation.

Figures

Figure 4. Finite element meshes for structural models H1 (black nodes only) and H2 (black and white nodes connected through inelastic joints).

Figure 15. [top] 2nd-level relative displacement [left] and relative acceleration [right] time histories; [bottom] 1st-level relative displacement [left] and relative acceleration [right] time histories. Experimental data (plain line / black) and numerical simulation with model G2 (dashed line with markers).

Figure 6. Beam-to-column element.

Figure 16. Experimental (black) and simulated (grey) 2nd-level relative displacement [top] and relative acceleration [bottom] time histories. Simulations are run with model H1 along with massproportional Rayleigh damping (ξ̂1 = 3%).

Figure 17. Experimental (black) and simulated (grey) 2nd-level relative displacement [top] and relative acceleration [bottom] time histories. Simulations are run with model H2 along with massproportional Rayleigh damping (ξ̂1 = 3%).

Figure 3. Elastic response spectrum to the seismic motion with a critical viscous damping ratio of 5% (pseudo-acceleration with respect to period).