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Description of inputs:
Acceleration in miniseed format
Damping factor [0.00, 0.99]
- Also known as a damping ratio.
- Describes how vibrations decay over time. Generally response spectrum amplitudes will decrease when the damping ratio is increased.
- Default is 0.05 for 5%, as most ground motion models are developed for a reference damping value of 5%.
- Values ranging from 0.5% to 30% are not uncommon.
Outputs
Plots in png format and data values in csv format for:
'SA' : Acceleration Spectra
'PSA' : Pseudo-acceleration Spectra
'SV' : Velocity Spectra
'PSV' : Pseudo-velocity Spectra
'SD' : Displacement Spectra
The plots are of response vs period, where the maximum period shown can be configured. Usually for displacement, up to 10 seconds and for acceleration and velocity it is shown to 4 seconds.
Pseudo-acceleration and pseudo-velocity spectra are approximations calculated directly from the displacement spectra.
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