Identification of Torsionally Coupled Shear Buildings Models Using a Vector Parameterization

Table 5

Nominal and identified masses, stiffness, and natural frequencies.

Nominal mass (kg)	Estimated mass (kg)	Nominal stiffness (kN/m)	Estimated stiffness (kN/m)	Nominal (rad/s)	Estimated (rad/s)
= 10.780	= 10.780	= 18.415	= 18.240	= 11.012	= 10.948
= 9.200	= 9.250	= 12.336	= 12.959	= 11.065	= 11.372
= 9.200	= 9.550	= 12.336	= 12.688	= 16.780	= 14.696
= 9.200	= 9.200	= 12.336	= 13.193	= 31.607	= 31.937
= 9.200	= 9.370	= 12.336	= 12.845	= 31.794	= 32.834
		= 18.415	= 19.144	= 47.635	= 45.563
		= 12.336	= 13.539	= 48.678	= 48.677
		= 12.336	= 13.719	= 49.133	= 50.344
		= 12.336	= 13.908	= 61.157	= 62.049
		= 12.336	= 13.420	= 61.612	= 63.904
		= 4.380	= 4.299	= 69.700	= 69.844
		= 1.742	= 1.751	= 70.082	= 71.580
		= 3.473	= 3.444	= 74.250	= 72.729
		= 1.737	= 1.680	= 93.386	= 89.871
		= 3.473	= 2.833	= 106.192	= 100.990
		= 1.737	= 1.484
		= 3.473	= 4.048
		= 1.737	= 1.892
		= 1.737	= 1.815