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contributor authorMahendra P. Singh
contributor authorAnil M. Sharma
date accessioned2017-05-08T20:51:28Z
date available2017-05-08T20:51:28Z
date copyrightNovember 1985
date issued1985
identifier other%28asce%290733-9445%281985%29111%3A11%282446%29.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/29461
description abstractAn approach is presented for the generation of seismic floor response spectra for structures which cannot be modeled as classically damped. Although the nonclassically damped structures do not possess classical modes, the proposed approach can still employ prescribed ground response spectra directly as input for the generation of floor spectra. The approach requires the solution of a complex eigenvalue problem which provides the information about the equivalent modal frequencies and damping ratios of the structure. The floor response spectrum value is expressed in terms of these equivalent modal parameters. The seismic input is required to be defined in terms of psuedo acceleration and relative velocity ground spectra for the equivalent modal frequencies and damping ratios of the structure and also at the oscillator frequency and its damping ratio. To verify the applicability of the proposed approach in view of simplifying assumptions made in this development, a numerical simulation study has been conducted. The results obtained by the proposed direct approach and the time history approach for an ensemble of acceleration time histories as inputs compare very well with each other, thus validating the applicability of the proposed approach.
publisherAmerican Society of Civil Engineers
titleFloor Spectra for Nonclassically Damped Structures
typeJournal Paper
journal volume111
journal issue11
journal titleJournal of Structural Engineering
identifier doi10.1061/(ASCE)0733-9445(1985)111:11(2446)
treeJournal of Structural Engineering:;1985:;Volume ( 111 ):;issue: 011
contenttypeFulltext


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