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An improved response spectrum method for calculating seismic design response. Part 1: Classically damped structures
Author(s) -
Singh M. P.,
Maldonado G. O.
Publication year - 1991
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/eqe.4290200703
Subject(s) - response spectrum , acceleration , displacement (psychology) , seismic analysis , response analysis , frequency response , mode (computer interface) , spectrum (functional analysis) , normal mode , structural engineering , spectral acceleration , ground motion , computer science , mathematics , engineering , physics , peak ground acceleration , vibration , acoustics , classical mechanics , psychology , electrical engineering , quantum mechanics , psychotherapist , operating system
A good response spectrum method, used for calculating the seismic design response for design inputs defined in terms of response spectra, should be able to include the effect of the higher modes, even though they may be truncated and not explicitly considered in the analysis. It should also be able to include the intercorrelation of the retained modes as well as their correlation with truncated modes. Herein one such method based on a suitable combination of the mode displacement and mode acceleration formulations of structural dynamics is proposed. Several numerical examples are presented to demonstrate the efficiency of the proposed approach vis‐a‐vis some other commonly used response spectrum approaches.