An iterative procedure for the generation of consistent power/response spectrum

Unruh, James F.; Kana, D. D.

doi:10.1016/0029-5493(81)90172-2

Cited by 31 publications

(12 citation statements)

References 2 publications

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“…This is consistent with the earlier observations of Basu and Gupta.ls Further, the curve for d = 0.2 shows abrupt jumps for the longer period oscillators following the number of peaks, N, becoming very small for the considered duration of 10 sec. In this situation, whether d = 0.1 and 0.2 or d = 0 2 and 03, both cases correspond to the same number of excursions as obtained from equation (25), and thus to the same ductility. To see the effect of site conditions on these curves, another case has been considered with wg = 5n and lo = 0 6 corresponding to the hard rocky site.…”

Section: Damage-dependent Spectral Ordinatesmentioning

confidence: 73%

A Note on Damage-Based Inelastic Spectra

Basu

Gupta

1996

Earthquake Engng. Struct. Dyn.

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SUMMARYWhen a structure is subjected to moderate to severe ground motions, a few excursions of the response yield level may take place following the reductions usually enforced in the design forces. These excursions are associated with progressive damage in the structure. Thus, a choice of the design level has to be suitably based on the maximum damage to be allowed in the structure. In this paper, a stochastic technique of developing damage-based non-linear spectra has been proposed for the aseismic design of those structures which can be idealized through Single-Degree-Of-Freedom (SDOF) oscillators. The proposed technique has been illustrated by obtaining the non-linear spectra which can possibly be used for a damage-based design. Along with the spectra, allowable ductility demand which should be supplied through proper sizing and detailing of the members and is compatible with the damage has also been specified. The non-linear SDOF oscillators have been approximated for this purpose by equivalent linear oscillators using a new stochastic linearization technique. The proposed linearization technique has been validated through simulation results in the case of an idealized, non-hysteretic, Elasto-Plastic (EP) model.

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Section: Damage-dependent Spectral Ordinatesmentioning

confidence: 73%

A Note on Damage-Based Inelastic Spectra

Basu

Gupta

1996

Earthquake Engng. Struct. Dyn.

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“…Several techniques for generating spectrum-compatible PSDs are available in literature [10,11]. However, they require iterative procedures and numeric evaluations either in the time domain or in the frequency domain [12,13]. An analytic model for the evaluation of the PSD compatible with the Eurocode 8 and the former Italian Code RS has been proposed for the first time in [14] and [15], starting from the PSD functions obtained by the numeric procedure proposed in [16].…”

Section: Introductionmentioning

confidence: 99%

A Novel Analytical Model of Power Spectral Density Function Coherent With Earthquake Response Spectra

Barone¹,

Iacono²,

Navarra³

et al. 2015

Proceedings of the 1st International Conference on Uncertainty Quantification in Computational Sciences and Engineering (UNCECO

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“…Such a PSDF used to characterize the seismic ground motion is called as the spectrum-compatible PSDF and is determined from the given design spectrum by using iterative schemes, e.g. those by Kaul, 43 Sundararajan, 44 Unruh and Kana 45 and Pfa nger. 46 However, the design spectra obtained for di erent damping ratios do not correspond to the same spectrum-compatible PSDF.…”

Section: Stochastic Estimatesmentioning

confidence: 99%

Response of multiply supported secondary systems to earthquakes in frequency domain

Dey

Gupta

1998

Earthquake Engng. Struct. Dyn.

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SUMMARYA new formulation of the transfer function has been proposed for the seismic analysis of linear, multiply supported secondary systems. The transfer function for a given response quantity has been formulated by directly using the ÿxed-base modes of the primary and secondary systems. This approach is exact and does not involve the determination of the combined system properties. Further, it is applicable to the secondary systems with various mass ratios and conÿgurations. A few example primary-secondary systems have been considered to illustrate the proposed formulation in case of di erent mass ratios. It has also been shown how the proposed formulation can be used to obtain reasonably accurate stochastic estimates of the secondary system responses. ?

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An iterative procedure for the generation of consistent power/response spectrum

Cited by 31 publications

References 2 publications

A Note on Damage-Based Inelastic Spectra

A Note on Damage-Based Inelastic Spectra

A Novel Analytical Model of Power Spectral Density Function Coherent With Earthquake Response Spectra

Response of multiply supported secondary systems to earthquakes in frequency domain

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