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Hi,
Can we define CBUSH properties w.r.t temperature in Opti-struct.
Thanks,
Hello,
Yes, from OS 2026 in non linear implicit analysis you can define CBUSH with PBUSHT properties. In the KN_LINE field of the PBUSHT, you can define temperature depended force vs deflection curves, via TABLEMD entries.
Each TABLEMD field must contain three fields. Both the displacement (or rotation) field and the temperature field are required to be defined in strictly ascending order.
An example of PBUSHT referring a TABLEMD card for all translation DOFs, only the TABLEMD for DOF 1 is provided.
PBUSH,123
PBUSHT,123, KN, 53, 54, 55, 56 ,57 ,58
TABLEMD 53 2
+ -100.0 -0.1 -80.0
+ 0.0 0.0 -80.0
+ 100.0 0.1 -80.0
+ -75.0 -0.1 +20.0
+ 0.0 0.0 +20.0
+ 75.0 0.1 +20.0
+ -50.0 -0.1 120.0
+ 0.0 0.0 120.0
+ 50.0 0.1 120.0
Do we have any example deck with TABLEMD on the Altair website or in a tutorial? We model fire tests with bolts represented by CBUSH elements, and it will be interesting to try TABLEMD. I don't see such a card in MSC Nastran; is it something unique to OS? Thank you!
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