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natural frequency of a cable stayed bridge

natural frequency of a cable stayed bridge

natural frequency of a cable stayed bridge

(OP)
I am trying to get an idea of the natural frequency of a cable stayed footbridge using a commercial structural analysis software and the software could not calculate the frequency owing to the structure having cable elements. I changed the cable elements to "tension only" elements and the software was then able able to determine a natural frequency.

Has anyone came across this when trying to get the natural frequency of a cable-stayed structure using software applications?

Since the behavior of a cable stayed structure has significant geometric non-linearity, does the natural frequency determination need to take this non-linearity into consideration ?

RE: natural frequency of a cable stayed bridge

Frequency analyisis is typically elastic analysis. Most softwares will not take even tension only elements.

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