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A platform for research: civil engineering, architecture and urbanism
A new inherent damping model for inelastic time‐history analyses
The paper presents a new damping model in which the inherent damping forces during inelastic vibrations are taken to be proportional to the first derivative of the restoring forces with respect to time. The model can also be interpreted as the damping forces being proportional to an estimate of the elastic component of velocity rather than to the total velocity, which includes plastic and elastic components. The model reduces to the conventional viscous damping model for elastic response but differs from it during inelastic deformations. Although the model is based on the initial properties of the structure, the resulting response is similar to that obtained by the conventional viscous approach using current properties (tangent stiffness). The new damping model is evaluated by comparisons with the response for different viscous damping models obtained by numerical inelastic time‐history analyses of a multi‐story structure subjected to different earthquake excitations. Copyright © 2017 John Wiley & Sons, Ltd.
A new inherent damping model for inelastic time‐history analyses
The paper presents a new damping model in which the inherent damping forces during inelastic vibrations are taken to be proportional to the first derivative of the restoring forces with respect to time. The model can also be interpreted as the damping forces being proportional to an estimate of the elastic component of velocity rather than to the total velocity, which includes plastic and elastic components. The model reduces to the conventional viscous damping model for elastic response but differs from it during inelastic deformations. Although the model is based on the initial properties of the structure, the resulting response is similar to that obtained by the conventional viscous approach using current properties (tangent stiffness). The new damping model is evaluated by comparisons with the response for different viscous damping models obtained by numerical inelastic time‐history analyses of a multi‐story structure subjected to different earthquake excitations. Copyright © 2017 John Wiley & Sons, Ltd.
A new inherent damping model for inelastic time‐history analyses
Luco, J. Enrique (author) / Lanzi, Armando (author)
Earthquake Engineering & Structural Dynamics ; 46 ; 1919-1939
2017-10-10
21 pages
Article (Journal)
Electronic Resource
English
Nonlinear elastic and inelastic spectra with inherent and supplemental damping
| Online Contents | 2013