Dynamics and Control of High-Rise Buildings under Multidirectional Wind Loads

Table 1

Modal parameters of the FEM model.

Mode number*	Generalized mass × 10^7 (kg·m^2)	Generalized stiffness × 10^9 (N·m)	Frequency (Hz)	Modal damping
1	1.2953	0.0147	0.1694	0.0102
2	0.9937	0.0178	0.2132	0.0112
3	0.4945	0.0222	0.3370	0.0150
4	0.8724	0.1115	0.5689	0.0234
5	0.8273	0.2153	0.8120	0.0326
6	0.3544	0.1600	1.0695	0.0426

*Modes 1 and 4 are lateral displacements in 𝑥-direction; modes 2 and 5 are lateral disp. in 𝑦-direction while modes 3 and 6 are torsion.