Hi guys,
Tony
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Hi Tony,
some summary on using damping in modal, spectral and seismic cases.
Damping defined in advanced parameters of modal case
is used in:
1/ damping correction of elastic spectra in these seismic codes where it is possible - for instance in EN-1998-1-1 (Eurocode 😎
2/ in calculation of complete quadratic combinations (CQC) and double sum method (2SM) combinations - see appropriate Help topic
Damping defined in spectral analysis is not used directly in spectral analysis calculations- it can be treated as some identifier of various spectra here. It is used when preparing spectra in case of spectra interpolation:
Above settings correspond to different actions so there is no risk to consider damping "twice".
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This damping setting would be used only when using this spectra in Spectra Interpolation:
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Regards,
Thanks for your reply Pawel,
Perhaps the dialogue box should be removed from it's current position, it's a bit misleading.
Thanks anyway,
Tony
Hi Tony,
sorry for incomplete/incorrect answer in my previous post:
damping from properties of spectra is used in spectra averaging not only in spectra definion but also when using averaged spectra directly in spectral load case - see the screen capture below:
In such case the actual relative damping used to calculate averaged spectra will be taken from advanced parameters of modal case preceding this spectral case.
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Regards,