Identification of Torsionally Coupled Shear Buildings Models Using a Vector Parameterization

Table 9

Estimated damping ratios of the three-story reduced model.

Estimate in %; with	Estimate in %; with	Estimate in %; with
= 1.006	= 1.010	= 0.308
= 1.011	= 1.020	= 1.008
= 1.084	= 1.095	= 1.014
= 1.786	= 1.785	= 1.093
= 1.827	= 1.834	= 1.756
= 2.437	= 2.236	= 1.802
= 2.589	= 2.309	= 2.214
= 2.671	= 2.437	= 2.270
= 3.251	= 2.601	= 4.566