DISCUSSION ON "EQUATIONS DERIVED FROM EQUIVALENT LINEARIZATION METHOD : Consideration based on energy balance and its application to evaluation of probability of excess of deformation capacity" : Hajime OKANO and Yuji MIYAMOTO, J. Struct, Constr. Eng., AIJ, No.562, 45-52, Dec., 2002

Abstract

Discussed items are summarized as follows. 1 The authors mention to the total energy input very simply. Do authors intend to insist on the ineffectiveness of the total energy input in estimating maximum deformation? 2 Is it theoretically true or simply conventional to consider that the maximum deformation is governed by the instantaneous energy input? 3 The reduction to the one-degree of freedom system does not claim the possibility of the equivalent linearization method but expresses only its limitation in dealing with damage distribution. Is it true or not? 4 The maximum deformation is one of important responses. But, why do the authors adhere to the maximum deformation so strongly on the sacrifice of true understanding of the energy balance?