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ERROR # 173: grid id <-> node id ???

Altair Forum User

Hi everybody!

Trying to run an analysis I get the following error message:

*** ERROR # 173 ***

A dependent d.o.f. defined more than once in rigid element entry.

grid id = 217306

component = 1

This message is repeated 5 times with an increasing number for component for the same grid id. So the highest number for component is 6.

I can't find the failed element in the model. Looks like the grid id does not comply with the node id.

Now my questions are: What is the grid id and how can i find the failed element? Does the number for component comply with the d.o.f.? How can i solve this problem?

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Altair Forum User

Hi everybody!

Trying to run an analysis I get the following error message:

*** ERROR # 173 ***
A dependent d.o.f. defined more than once in rigid element entry.
grid id = 217306
component = 1

This message is repeated 5 times with an increasing number for component for the same grid id. So the highest number for component is 6.

I can't find the failed element in the model. Looks like the grid id does not comply with the node id.

Now my questions are: What is the grid id and how can i find the failed element? Does the number for component comply with the d.o.f.? How can i solve this problem?

Have you tried to check your rigid elements and their dependencies from the 'tools>check>1d>dependency'?

Altair Forum User

Yes, i tried the element check. And there are several double dependent elements. But editing them implicates new difficulties.

The rigids in my model are RBE3-elements that were created automatically by definition of area connectors. Deleting one of those RBE3's causes the whole connector to be unrealized. That means, all elements of this specific connector are deleted too.

So i need to find that specific element causing the error.

Altair Forum User

Hi, I am trying to make my double dependent rigids, non-double dependent, but when I select my double dependent node (by left mouse button clicking it I presume) and then click update, it just automatically unselects it and nothing happens. I'm struck dumb with this problem and haven't been able to solve it for the past 3 days. Any suggestions would be more than welcome!

Altair Forum User

Hi guys..

I had the same problems, then I came across your thread.

*** ERROR # 173 ***

A dependent d.o.f. defined more than once in rigid element entry.

GRID ID = 70427

component = 1

Basically, the problem is the dependent-independent relationship between two or more nodes. So, as the GRID ID is a node ID, thus you can either delete/find the node through that ID.

Hope this helps.