- Virgin, L.N. and Fielder, W.T. and Plaut, R.H., Transient motion and overturning of a rocking block on a seesawing foundation,
Journal of Sound and Vibration, vol. 191 no. 1
pp. 177 - 187  .
(last updated on 2007/03/23)
A slender, rigid, rectangular block resting on a rigid, flat foundation is subjected to a seesawing excitation. The foundation rotates back and forth about a pivot point located under the center of gravity of the block, causing the block to rock and overturn. The seesawing motion leads to some interesting phenomena, including the possible increase in energy at impact. As for the case of a translating foundation, the transient response of the block is extremely sensitive to the excitation parameters, and fractal behavior is exhibited.
Foundations;Earthquakes;Dynamic response;Soil structure interactions;Failure (mechanical);Structural analysis;Mathematical models;