Abstract
The dynamic response analyses in both the elastic and inelastic ranges were done by use of a lumped mass model with and without the effects of strain rate and stress relaxation. The modified D-Trilinear model in which stiffness and strength are determined from the measured test data and the Maxwell Visco-elastic model was applied for the hystresis rule. The results obtained from two different experimental procedure such as statical and dynamic one, and analytical results were compared. The validity of modelling for the restoring force characteristics was inverstigated. As a result, a good agreement among these resluts can be observed if the measured stiffness and strength of test specimen is used and consideration is given to the effects of strain rate and stress relaxation. It is pointed out in case of discussion on earthquake performance of structure from response analysis that the restoring force charateristics with the effects of strain rate and stress relaxation should be evaluated accurately.
