A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Effect of hysteretic smoothness on inelastic response spectra with constant‐ductility
This paper presents an efficient methodology for computing constant‐ductility inelastic response spectra. The computation of constant‐ductility spectra involves numerical root‐finding algorithms to find the strongest structure providing a desired ductility response. Smooth inelastic structural behavior is modeled using a first‐order nonlinear differential equation and the transient structural response is solved using an implicit algorithm requiring Newton iterations at each time step. For structural models with smooth hysteretic behavior (not piece‐wise linear), a simple root‐finding method involving a combination of hyperbolic fits, linear interpolation, and Newton's method converges upon the highest strength (conservative) solution with a small number of iterations. The effect of the hysteretic smoothness on the occurrence of multiple roots is examined for two near‐fault and two far‐fault earthquake records, and for two measures of ductility and for normalized hysteretic energy. The results indicate how the smoothness of the hysteretic behavior affects ductility demand and constant‐ductility response spectra. Copyright © 2010 John Wiley & Sons, Ltd.
Effect of hysteretic smoothness on inelastic response spectra with constant‐ductility
This paper presents an efficient methodology for computing constant‐ductility inelastic response spectra. The computation of constant‐ductility spectra involves numerical root‐finding algorithms to find the strongest structure providing a desired ductility response. Smooth inelastic structural behavior is modeled using a first‐order nonlinear differential equation and the transient structural response is solved using an implicit algorithm requiring Newton iterations at each time step. For structural models with smooth hysteretic behavior (not piece‐wise linear), a simple root‐finding method involving a combination of hyperbolic fits, linear interpolation, and Newton's method converges upon the highest strength (conservative) solution with a small number of iterations. The effect of the hysteretic smoothness on the occurrence of multiple roots is examined for two near‐fault and two far‐fault earthquake records, and for two measures of ductility and for normalized hysteretic energy. The results indicate how the smoothness of the hysteretic behavior affects ductility demand and constant‐ductility response spectra. Copyright © 2010 John Wiley & Sons, Ltd.
Effect of hysteretic smoothness on inelastic response spectra with constant‐ductility
Song, Jong‐Keol (author) / Gavin, Henri P. (author)
Earthquake Engineering & Structural Dynamics ; 40 ; 771-788
2011-06-01
18 pages
Article (Journal)
Electronic Resource
English
Effect of hysteretic smoothness on inelastic response spectra with constant‐ductility
| Online Contents | 2011
The Damping Effect on Constant-Ductility Seismic Demand Spectra of Inelastic Structures
| British Library Online Contents | 2007
Pseudo-constant ductility inelastic spectra for bi-directional ground motions
| British Library Online Contents | 2004
Consistent Inelastic Design Spectra: Hysteretic and Input Energy
| Online Contents | 1994