I have done a modal analysis of a building but am getting some weird results in my Dynamic Analysis Results table (see attachment). I have done load to mass conversion for self weight, snow and live loads. My problem is that total mass in the table, for Z direction is about 10% larger than for those in X/Y directions. Any explanation as to why this may be?
Solved! Go to Solution.
So there was a problem with the zip file and I am unable to get it below the allowed file size without calc results. Is there a way I can send it to you by email or upload it somewhere?
This is not going to be easy and fast to solve due to the way you defined the model. So far I have noticed that you ignored instability of type 2 (which you should not do) and defined linear release with all check boxes marked and you used orthotropic thicknesses. To make things more difficult this is a large model.
I'm afraid I will need to delete part by part to try to find out the reason.
Thanks for the quick reply and for looking into it. Any tips on improving the mesh on some of the panels on the roof is also greatly appreciated! Would you mind deleting the file from my post after dl'ing it?