ABAQUS - DEGREE OF FREEDOM 11 AND AT LEAST ONE OF DEGREES OF FREEDOM 1 THRU 6 MUST BE ACTIVE IN THE MODEL FOR *COUPLED TEMP-DISP. CHECK THE PROCEDURE AND ELEMENT TYPES USED IN THIS MODEL.
Hi,
I’m trying to learn ABAQUS to simulate temperature-displacement problems.So, I’ve started on a simple example: two plates in contact, the 2nd presses and moves on the 1st plate (which is fixed).Could anyone tell me why the program gives me this error:
DEGREE OF FREEDOM 11 AND AT LEAST ONE OF DEGREES OF FREEDOM 1 THRU 6 MUST BE ACTIVE IN THE MODEL FOR *COUPLED TEMP-DISP. CHECK THE PROCEDURE AND ELEMENT TYPES USED IN THIS MODEL.
Let me tell you what I’ve made:
1. I draw two plates (3D)
2. At proprieties: - two materials (for each plate) – I specified: density, elastic proprieties, conductivity, specific heat;- create two section for each material;- assign those sections for each plate.
3. Assembly – I positioned plates one above other to make possible the contact
4. Interaction – I let the program to find contact pairs (with small sliding in Kinematic contact method). There I declare the Contact Property – penalty for tangential behavior, hard contact for normal behavior and heat generation with default values.The contact takes place in the Initial Step
5. Steps – there I made three steps:
- Initial one
- 1st pressure
- 2nd velocity
- 3rd temp-disp
The fact is that I tried to work with abaqus static (same error) and with abaqus explicit. Now I remain on Explicit (dynamic explicit).
6. Loads:
- BC bottom surface of 1st element ENCASTRE (initial step)
- pressure on the top of 2nd element (1st step - pressure)
- BC velocity for the 2nd element (the one who is pressed) (2nd step - velocity)
- BC temperature – Ex: 20 Cdgr (3rd step – temp-disp)
7. Then I run the program. If I let the 3rd step it gives me that Error message.If I run the program without 3rd step works good and let me see the movement of the plate and the mechanical stress.
Thanks for your attention
Regards,
Stefan Voloaca
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