Influence of Turbulence, Orientation, and Site Configuration on the Response of Buildings to Extreme Wind

Table 2

Modal parameters of the FE model.

Mode number	Generalized mass ×10^7 (kg·m^2)	Generalized stiffness ×10^9 (N·m)	Frequency (Hz)	Modal damping
1	1.30	0.015	0.17	0.010
2	0.99	0.018	0.21	0.011
3	0.49	0.02	0.34	0.015
4	0.87	0.11	0.57	0.023
5	0.83	0.22	0.81	0.033
6	0.35	0.16	1.07	0.043

Modes 1 and 4 are lateral modes in the 𝑥-direction; modes 2 and 5 are lateral modes in the 𝑦-direction, while modes 3 and 6 are torsional.