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INCOMPATIBLE KINEMATIC CONDITIONS IN MODEL

Hi,
I am working in crash, while running starter in radioss it is adviced to run without any incompatible kinematic condition warning. But in my model it shows there was an incompatible kinematic conditions in the model. Mainly it shows this error in RWALL & GROUND Interface. How to rectify it ?? Is there any solution for this.

WARNING ID : 446
** WARNING IN RIGID WALL
DESCRIPTION :
-- RIGID WALL ID : 384
-- RIGID WALL TITLE : GROUND
98530 NODES HAVE BEEN REMOVED FROM RWALL,
DUE TO INCOMPATIBLE KINEMATIC CONDITIONS

WARNING ID : 446
** WARNING IN RIGID WALL
DESCRIPTION :
-- RIGID WALL ID : 385
-- RIGID WALL TITLE : RIGID_WALL
98530 NODES HAVE BEEN REMOVED FROM RWALL,
DUE TO INCOMPATIBLE KINEMATIC CONDITIONS

WARNING ID : 312
** INCOMPATIBLE KINEMATIC CONDITIONS IN MODEL
DESCRIPTION :
3654046 INCOMPATIBLE KINEMATIC CONDITIONS IN MODEL

SUMMARY OF POSSIBLE INCOMPATIBLE KINEMATIC CONDITIONS :
-----------------------------------------------------

- POSSIBLE INCOMPATIBLE KINEMATIC CONDITIONS BETWEEN
SEVERAL INTERFACES TYPE 1 2 12 OR 9

- POSSIBLE INCOMPATIBLE KINEMATIC CONDITIONS BETWEEN
SEVERAL RIGID WALLS

Kindly suggest some solution for this.

Thanks in advance

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Altair Forum User

Hi Subhu,

A rigid body slave node cannot be used for another condition and I think you might have used the rigid body slave nodes also for the rigid wall slave nodes.

You can ignore this warning, else you can also try with flag Ikrem=0 for the rigid body, as the slave nodes of the rigid body are automatically suppressed of the rigid walls; the master node of the rigid body will realize the contact with the rigid walls if it is declared as a slave node of the rigid walls.

Subhu_21017

Thanks george,

I have also applied Ikrem=0, still there is a warning for Incompatible Kinematic error. How can i define Rwall and Ground interface.

Altair Forum User

Hi Subhu,

You can actually ignore this warning and continue running the analysis.

Can you please share the model so that we can check the model.