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What's the equivalent general type of contact for Axis symmetric Analysis in Radioss?

Anuj Nandal_21993

I am trying to run an axis symmetric analysis in Radioss. I am trying to find a type of contact similar to TYPE 7 contact, I want to use it for self contact. I tried TYPE 7 contact, however I got an error that it is incompatible with 2D analysis. I am trying to use TYPE 5 and TYPE 3, however I am getting this error:

"ERROR ID : 81
** ERROR IN INTERFACE
DESCRIPTION :-- INTERFACE ID: 5
-- INTERFACE TITLE: Groove_Cell
TIED INTERFACE: SECONDARY NODE(S) OUTSIDE MAIN SEGMENT"

Is TYPE 3 & 5 Tied type contact (Since TIED INTERFACE is written in error message)? However there is a provision to enter coeff of friction. I am a little confused.

Can someone please help me here?

PS: I am running v2025.1

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Radioss

Altair HyperWorks Platform

v2025.1

Accepted answers

HarishT

Hi I think this because of the sharp edge and the mesh size diffeent.

Plz tey to run with finer mesh

All comments

HarishT

Hi Anuj,

For axis symmetric analysis we need use type 05 contact.

Please find the attached sample file which help to setup your model, also follow the below steps.

Run_1_0001.zip

For Axisymmetric analysis, you have tofollow certain guidelines as below:

For 2Danalysis you need to follow some conditions as below:

Model should be in YZ plane. Normal in Positive X. N2D3D define analysis type forboth axisymmetrical analysis (N2D3D =1)and plane strain analysis (N2D3D =2),the elements must be defined in YZ plane and their normal has to be in thepositive x-direction. It is recommended to define the model in the Y+ and Z+quadrant for 2D analysis (N2D3D=1, 2). For axisymmetrical analysis mesh of model should nevercross the axis Y=0

In the /ANALY, In axisymmetrical analysis (N2D3D =1),Y is the radial direction and Z is the axis of revolution

Change the element types from Shell > QUAD

For These Quad you have to assign Solid property

TYPE5 contact should be used, for this create line segmentand in the deck you have to change /LINE/SEG to /SURF/SEG.

Please cross check ifthese conditions are followed in your model. Also please find enclosed asample model. This is an example for sheet rolling simulation.

Anuj Nandal_21993

I did keep all the above points, just made a dummy file with what I need. Can you please once go through it and see if I have missed something. I am getting a Negative or Zero volume elements error. Let me know if there are any improvements that can be made.
Query:
How is the point of revolution decided (Since Axis symmetric)?

Temp2.hm

HarishT

Imp_Disp_R3.zip

Hi Find the updated model.

I have updated the contact, also moved the model so that it should in above 0,0,0

Please review and let me know your comments.

Regards

Harish

Anuj Nandal_21993

Hi Harish, I am using V2025.1, There is a version error while importing the file. Any workarounds