Vibration analysis in Ram Concept

Ash Afnani — Mon, 17 Jul 2017 23:42:41 GMT

Hi all,

I have two questions about vibration analysis using RAM Concept.

How can I know whether the vibration analysis is performed on a "cracked" or "uncracked" models. And also, do I have control over that? I ask this question because I am doing a series of vibration analyses on different type of floor systems:
- For composite steel/concrete floors, I convert the steel sections in the composite slab to an equivalent concrete beam, but need to make sure that the vibration analysis is performed on the uncracked sections.
- For reinforced concrete slabs I want to performed the vibration analysis on the cracked sections under service load case.
I understand that the vibration analysis is RAM Concept is primarily performed by using a series of harmonic functions to represent human walking. I want to know if alternative/user-defined time-histories can be used for the analysis? For examples, I would like to model the impact of a car/truck passing over a speed bump, which requires a different time-history of the load.

Thanks a lot for your assistance.

Regards,

Ash

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