Premium
Decoupled dynamic analysis of combined systems by iterative determination of interface accelerations
Author(s) -
Spanos P. D.,
Cao T. T.,
Jacobson C. A.,
Nelson D. A. R.,
Hamilton D. A.
Publication year - 1988
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.4290160403
Subject(s) - interface (matter) , computation , modal , acceleration , point (geometry) , modal analysis , computer science , control theory (sociology) , reliability (semiconductor) , scheme (mathematics) , algorithm , engineering , structural engineering , mathematics , mathematical analysis , finite element method , geometry , physics , classical mechanics , artificial intelligence , chemistry , maximum bubble pressure method , control (management) , bubble , quantum mechanics , parallel computing , polymer chemistry , power (physics)
A dynamic analysis technique is presented that can be used to determine the response of a discrete model of a large linear structural system composed of multiple substructures. The technique circumvents the costly computation of the modal characteristics of the combined system. This is accomplished by relying on a predictor‐corrector scheme to converge iteratively to the interface accelerations of the combined system, while the equations of motions of the individual structures are integrated separately. In this regard, the temporal slopes of the interface accelerations (jerks) are computed at each time point of integration to predict the interface accelerations at the next time point. The proposed technique is exemplified by conducting a space shuttle landing loads analysis; the obtained numerical data demonstrate its reliability and efficiency.