Inelastic Spectra
Posted: 02 Oct 2012, 17:00
It appears that there might be a problem with inelastic spectra in SeismoSpect when the SeismoSignal Method is selected in the options for generating inelastic spectra.
I get the same basic shape with SeismoSpect as I do with SeismoSignal, but the displacement spectra amplitudes are different - higher in SeismoSpect - by a factor of 981.
So I suspect that this is merely a units problem and a conversion has been omitted somewhere internally when "SeismoSignal Method" is set in the options for inelastic spectra.
I think this must be the culprit - as I look more closely I see that every point in the SeismoSpect run is exactly 981 times higher than the corresponding value in SeismoSignal.
I am generating inelastic spectra for a ductility of 6.0.
I get the same basic shape with SeismoSpect as I do with SeismoSignal, but the displacement spectra amplitudes are different - higher in SeismoSpect - by a factor of 981.
So I suspect that this is merely a units problem and a conversion has been omitted somewhere internally when "SeismoSignal Method" is set in the options for inelastic spectra.
I think this must be the culprit - as I look more closely I see that every point in the SeismoSpect run is exactly 981 times higher than the corresponding value in SeismoSignal.
I am generating inelastic spectra for a ductility of 6.0.