Parameter identification and seismic response analysis of timber structures

Determination of experimentally derived model parameters for hysteresis is the first step in inelastic dynamic analysis. This paper introduces parameter or system identification techniques that are used to systematically estimate the parameters of the Bouc-Wen-Baber-Noori-Foliente (BWBNF) hysteresis model from cyclic test data. This rate-dependent model accounts for important features of hysteretic behavior of timber joints and structures that have been observed in experiments. Experimental data from a shear wall pseudo-dynamic test in Japan are used in parameter identification. The identified models are then used to study the response of single-degree-of-freedom wood structures subjected to both deterministic and stochastic loads. These types of analyses can be used to extend the usefulness of limited experiments and to evaluate the design and performance of a wood building under various kinds of loading scenarios.