Research Article

Damage Localization in a Building Structure during Seismic Excitation

Table 7

Symbols used in this paper.

Shear wave velociy (m/s)
Constant proportional to damping (Ns/m)
Displacement (m)
Velocity (m/s)
Acceleration (m/s2)
Ground motion (m)
Ground acceleration (m/s2)
TTime (s)
Total height of the building (m)
Height of the story (m)
Step of discretization
Shear wave velocities matrix (m/s)
Constant proportional to the damping matrix (Ns/m)
Banded matrix
Boundary condition vector
Number of floors
Identity matrix
Displacement matrix (m)
Velocity matrix (m/s)
Acceleration matrix (m/s2)
Acceleration output (m/s2)
Shear wave velocity vector (m/s)
Constant proportional to the damping vector (Ns/m)
Number of integrations over finite time intervals
Size of the moving window
Sampling time (s)
Length of the time integration window
Filtered displacement signals (m)
Filtered velocity signals (m/s)
Filtered acceleration signals (m/s2)
Degree of freedom to normalize the amplitude of the filtered signals
Covariance matrix
Forgetting factor
Estimation error
Frequencies (Hz)
Stiffness (N/m)
Damping (Ns/m)
Mass of the story (Kg)
Lower bounds for estimated parameters
Damage story location