Identification of Torsionally Coupled Shear Buildings Models Using a Vector Parameterization

Table 6

Natural frequencies and damping ratios estimated with the algorithm in Figure 11, where and the initial frequencies and in (16) have an error of 50% with respect to and .

(rad/s)	(%)	(%)
= 10.943	= 14.133	= 1.000
= 11.382	= 14.143	= 1.000
= 14.570	= 0.647	= 1.036
= 31.950	= 7.165	= 1.606
= 32.841	= 6.714	= 1.641
= 45.558	= 5.131	= 2.163
= 48.693	= 5.366	= 2.296
= 50.367	= 4.024	= 2.367
= 62.085	= 1.814	= 2.871
= 63.934	= 1.449	= 2.951
= 69.890	= 1.956	= 3.210
= 71.620	= 0.535	= 3.286
= 72.771	= 0.624	= 3.336
= 89.967	= 0.357	= 4.092
= 101.091	= 8.167	= 4.583
	= 25.390