Hello,
I have a structure, but when I run the calculations I have this error: "Number of dynamic degrees of freedom equals 0"
I think that is related to the application of the earthquake.
I can't solve it. Any suggestions?
Best Regards
Most likely you defined supports in all nodes or you set 'disregard' density in the parameters of the modal analysis without making any load to mass conversion. Otherwise I need the model to check.
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Hello
My parameters on modal analysis are this. Whow can I send the file to you?
Best Regards
Nuno Geirinhas
Save the file with under a new name with no results and then compress it (*.zip). Then you can attach it to the post.
If it is too large use one of the free web services for file transfer and attach the link to download the file.
"Most likely you defined supports in all nodes .."
Divide bars e.g. in this way:
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Hello Athur,
I have the same problem with the "Number of dynamic degrees of freedom equals 0.".
I try to divied the Edge 1 in more elements, but I still have this problem. My objectiv is to find the modal analysis of a dam.
Could you or somebody help me please to solve this issue?
Thanks in advance,
Razvan
Some workaround may be replacing your plane strain model by volumetric one.
Attached the file where I converted your model to solid - 10 meter slice of the dam modeled, additional face supports added to make it coherent with plane strain constraints.
A have deleted the loads - it will be necesary to re-define them as surface loads.
I have also noticed that you attempted to convert water pressure load into masses. Usually considering the pressure of liquid in vibrations is not so simple - there were some references considering it in some other post on this forum.
Best regards,
I have the same problem with the "Number of dynamic degrees of freedom equals 0.".
Corrected in SP3 for Robot 2015.
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