Identification of Torsionally Coupled Shear Buildings Models Using a Vector Parameterization

Table 3

Estimated damping ratios.

Estimate in % with	Estimate in % with	Estimate in % with
= 1.006	= 1.005	= 1.005
= 1.011	= 1.010	= 1.009
= 1.084	= 1.065	= 1.089
= 1.786	= 1.781	= 1.777
= 1.827	= 1.815	= 1.804
= 2.437	= 2.410	= 2.399
= 2.589	= 2.580	= 2.572
= 2.671	= 2.653	= 2.640
= 3.251	= 3.243	= 3.234
= 3.344	= 3.325	= 3.311
= 3.641	= 3.618	= 3.594
= 3.728	= 3.712	= 3.702
= 3.785	= 3.761	= 3.738
= 4.649	= 4.609	= 4.565
= 5.211	= 5.167	= 5.110