1996 Volume 61 Issue 481 Pages 117-126
The authors have already proposed a basic law that governs damage distributions in elastic-perfect plastic shear-type models as a function of structure's strength distributions. In this paper, one quarter of the energy input due to ground motions is assumed to be absorbed first by plastic deflection in one direction, and then the rest of energy is assumed to be distributed throughout the following reversals of plastic deflection according to the damage distribution law. Thus the concentration of plastic deformation in one direction, and the maximum and residual deformations in one-degree-of-freedom systems with various kinds of force-deformation curves are determined in a quantitative manner.
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