Identification of Torsionally Coupled Shear Buildings Models Using a Vector Parameterization

Table 11

Estimated damping ratios of the two-story reduced model.

Estimate in %; with	Estimate in %; with	Estimate in %; with
= 1.008	= 1.006	= 0.305
= 1.019	= 1.012	= 1.091
= 1.103	= 1.096	= 1.664
= 1.724	= 1.693	= 1.708
= 1.738	= 1.719	= 1.717
= 2.124	= 2.078	= 2.020