Free free modal analysis

what is "free free modal analysis"? How to do "free free modal analysis"?
In free free modal analysis, no support is applied and 'first six frequencies are zero' or near zero. It is used to check the 'element connectivity of meshed parts' and also to check 'parts with no contact or connection in assembly analysis'.
"fea" "finite element analysis" "cae"
"ansys" "ansys workbench"

00:00 modal analysis using ansys
01:46 subscribe
2:24 types of modes
2:26 node and antinode of vibration
2:28 types of mode shapes
2:58 node and anti node
4:48 part vibrates with infinite transmissibility ratio
5:15 what happens at resonance
5:48 how to change natural frequency
7:00 model beam in spaceclaim
10:25 check element order
11:00 request stress and strain in modal analysis
12:45 first six frequencies zero
14:28 location of node in mode shape
14:30 location of antinode in mode shape
14:50 why frequencies are same

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