Steel Stair Footfall Analysis - No Results Issue

[umut.akparlar]

Hello,

I want to perform a footfall analysis but it gives me no results for stairs SCI P354. 

Is there anything that we can do for getting some results instead of zero values? 

Thank you

[okapawal · Accepted solution]

Hi @umut.akparlar 

The modal frequencies for your model are pretty high.  The first mode frequency in modal analysis is 21.71 Hz.

You need to set higher "Frequency limit" in the "Modal analysis parameters" for Footfall analysis.  Then you will get results for the Footfall case.

I'm not sure if it is intentional, but you set "Disregard density" (self-weight) for modal analysis case, but you didn't do it for Footfall.  Remember that Footfall runs its own modal analysis with parameters as above.