Premium
The dynamics of an elastic structure coupled with a rocking wall
Author(s) -
Makris Nicos,
Aghagholizadeh Mehrdad
Publication year - 2017
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.2838
Subject(s) - nonlinear system , coupling (piping) , structural engineering , parametric statistics , moment (physics) , shear wall , dynamics (music) , stability (learning theory) , mechanics , physics , classical mechanics , engineering , mathematics , computer science , mechanical engineering , acoustics , statistics , quantum mechanics , machine learning
Summary This paper investigates the dynamic response of an elastic single‐degree‐of‐freedom oscillator coupled with a rocking wall. Both configurations of a stepping rocking wall and a pinned rocking wall that have been reported in the literature are examined. The full nonlinear equations of motions are derived, and the paper shows through a comprehensive parametric analysis that the coupling with a rocking wall has mixed results on suppressing the dynamic response of the elastic oscillator. The stepping rocking wall is most effective in suppressing displacements of relative flexible structures with a heavier wall being most effective. In contrast, the pinned wall amplifies the displacements along a wide range of the spectrum with a heavier wall being most detrimental. This happens partly because in a pinned wall the moment from its weight works against stability. Copyright © 2016 John Wiley & Sons, Ltd.