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Error ID 79 : ** ERROR : DUPLICATE ID

Hi,

I'm trying to run a simulation but there are many of my elements (3D solid and 3D Shell) where I have the Error ID 79 (** ERROR : DUPLICATE ID). What can I do to suppress this error?

(I already check if I had more than one mesh, but no)

thanks

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Radioss

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Altair Forum User

Hi Beth02,

Can you paste the entire error message?

or share the .out file with us.

Altair Forum User

Here is the two types of error message I have :

ERROR ID :           79
** ERROR : DUPLICATE ID
DESCRIPTION :
   IN 3D SHELL ELEMENTS DEFINITION DEFINITION :
   ID=2951 is DUPLICATED

ERROR ID :           79
** ERROR : DUPLICATE ID
DESCRIPTION :
   IN 3D SOLID ELEMENTS DEFINITION DEFINITION :
   ID=3015 is DUPLICATED

thanks

Rahul Rajan_21763

Hi,

Could you share us complete input deck?

Make sure that you are not having duplicate elements or empty property collectors.

Regards

Rahul R

Altair Forum User

this is my .out file

Unable to find an attachment - read this blog

Altair Forum User

Hi Beth02,

Check if there are any duplicate elements.

Also, try renumbering the elements IDs using Tools page>>Renumber and run the analysis.

Altair Forum User

Hi M. Pagadala

Thanks for your answer. When I checked if there are duplicate ID, HyperMesh told that I have not. When I looked into the _0000.rad file, I saw that the same ID was used for different meshes. Using the ‘’renumber’’ tool has solved the problem (no error anymore), but I don’t understand why the numbering of my different meshes have some same ID? (The only thing I saw in link was in the mesh option ‘’allow duplicate ID’’, but this option was unchecked.)

Do you know why the numbering of my mesh’s elements ID of different parts are sometime the same?

Thank you

Altair Forum User

Hi Beth02,

I am not really sure what created the duplicate IDs.

In future if you come across the same problem, please share your model with us.

RAMGANESH

Dear Prakash,

I am facing the same problem after renumbering also facing the same isuue.

Please give your valuable suggestions

Thanks

Ram

Altair Forum User

Hi Ram,

Can you share the model file with the out file

RAMGANESH

Dear George,

Shared the file in your dropbox

Thanks

RAM

Altair Forum User

HI Ram,

Please check the rigid bodies in the model. The same master node of rigid bodies is shared by a least two rigid bodies, which is an incompatible condition.

Moreover,a node of the mesh is selected as the master node of a rigid body, which is not recommended.

Please check the output block created in the model. No TH variable is defined in the model.

RAMGANESH

Dear George,

how to clear the dependency in the rigid elements?

In rigid elements , Dependent node & independent node is there...

Which node can't be shared by two rigid elements??

Both can't be shared by two elements???

I am in situation to create the two rigid elements at particular location...

Please give your valuable guidelines

Thanks

RAM

Altair Forum User

Hi Ram,

A rigid body is defined by a set of slave nodes and a master node and the best practice is to create a master node that is not attached to anything. The master node of the rigid body should be free. Only loads and boundary conditions should be applied on the master node.

And also it is not possible to have two rigid elements connected to a single dependent node, which will create dependency issue.In Check Elements (F10) panel user can check rigid elements for conditions causing double dependency and can clear them.

<?xml version="1.0" encoding="UTF-8"?>

RAMGANESH

Dear George,

I am facing the error as follows

** ERROR IN GROUP DEFINITION
DESCRIPTION :
-- TRANSFORMATION UNEXISTING
-- ID : 1
-- TITLE : auto1
NODE GROUP ID=0 DOES NOT EXIST

I have cleared the double dependency of the rigid elements also but still error occurs..

Please give your valuable guidelines

Thanks

RAM

gopal_rathore

Hi,

Can you send the .rad files?

Altair Forum User

Hi Ram,

Did you assign any local coordinate system for assigning loads?.

Please share the complete out file.

RAMGANESH

Dear George ,

Shared the out file in your drop box

Thanks

RAM

RAMGANESH

Dear George,

While assign initial velocity with the LCS getting the following error.

Thanks

RAM

<?xml version="1.0" encoding="UTF-8"?>

Altair Forum User

Hi Ram,

If you have a local system in the model, make it a fixed skew and try running the analysis. A fixed skew is necessary which you have to reference in the /inivel card.

RAMGANESH

Dear George,

After fixing the skew also i am getting the same error and getting error in admas node group.

Thanks

RAM

Altair Forum User

Hi Ram,

Please share the model file in dropbox.

RAMGANESH

Dear George ,

File shared in your dropbox

Thanks

RAM

gopal_rathore

HI,

It required fixed frame in the above table. Go to tools>create cards>frame>fix

You can try this. I have used this for such boundary conditions.

RAMGANESH

Dear Gopal,

I have fixed that issue but getting error in admas and rigid body definition.

Thanks

RAM

gopal_rathore

Hi,

Please provide the screen shot of the error message.

Altair Forum User

Hi Ram,

Please assign the node group for the system collector defined. If node_ID1 and node_ID2 are defined, the rotation will be done around the vector defined by node_ID1 and node_ID2. And also provide the rotation angle value. Please refer the Help Menu on /TRANSFORM/ROT card where it is explained in detail.