  This paper studies the dynamics of an elastic single degree of freedom
oscillator (representing an elastic frame) coupled with a rocking wall. Two
types of rocking walls namely stepping rocking wall and pinned rocking wall are
presented and analyzed. For each case, full nonlinear equations of motions are
calculated. The dynamic behavior of the systems shows mixed results in
suppressing the dynamic response of the elastic oscillator. Through
comprehensive analysis, pinned rocking wall amplifies the displacement along
wide range of the spectrum, in the other hand, stepping rocking wall is the
most effective especially in relatively flexible structures and with a heavier
wall. This is mainly because of the pinned wall's mass works against its
stability. In this study, a simple, oscillator-rocking-wall model is defined
and analyzed using OpenSees and, the results from OpenSees shows a good
agreement with equation of motion solution using MATLAB.
