Strange modification of Interface node locations

I use ANSYS to generate flex bodies for use in ADAMS. Most times, I will also run the generated .mnf file through ADAMS/Flex to shrink the file size using the MNF Optimizer and the "Precision>Single" Option.

Today, I noticed some strange modifications to the locations of my interface nodes after the ADAMS/flex work. Below are the coordinates for a node/marker in the original .mnf...

This is what I see when I check the file after optimization...

???

Any thoughts?

0 Martin Kieltsch 7 months ago

Pretty certainly related with ADMS-113563.

In a nutshell: ADAMS is re-assigning the node-id's for your markers after subsystem/assembly open.

If you save the subsystem, there's a new table (CONNECTIVITY).

If the node-id is not found in this table it's assigning it to the "closest" flex body node - even if that is far far away.

In your case you have the mild case that this re-assigning to node 1 is just adding some numeric accuracy in x/y values.
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0 jpatterson 7 months ago

Hi Martin,

Thanks for the reply, and good to hear from you.

I failed to mention, this is a model in ADAMS/View. I have not checked the behavior in ADAMS/Car.
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