sequentially coupled thermal stress analysis in abaqus

[skilloh]

Hi there
I run a heat transfer analysis and use the resulting .odb file as input for a predefined field in my stress analysis. In the stress analysis model I apply new mesh, BCs, elements,etc. I also define the expansion coefficient alpha.
After running the stress analysis I can see the temperature from the previous analysis has been applied. However, the stresses in the model are zero. Does anyone have a hint on what I need to do so Abaqus computes the stress resulting from the temperature field?
Best regards

 

[Mustaine3]

Is an Expansion coefficient defined for the material?

 

[skilloh]

yes it is.

 

[Mustaine3]

Are there boundary condition that block the expansion of the material?
Are the field output requests for stresses ok?
Have you included NT into the field output request to check if the temperature is actually applied?
Is an initial temperature defined?

 

[skilloh]

yes
yes
yes
the initial temperature field (taken from previous heat transfer analysis) was set and then (wrongly) propagated through the stress analysis step. I now changed the temperature transfer caused by the predefined field from "propagate" to "modify" in the SA-step and selected different increments from the HT-analysis. It's working now, thanks a lot!