Incremental temperature load

[mahbub1669]

Hi
Using ABAQUS, I am trying to model a simple steel I-beam subjected to incremental temperature load in order to model the beam subjected to fire till failure occurs. I use the stress-strain curve of steel at various temperatures. I am trying to do it in abaqus/explicit analysis. But, I don't know how to do this. I don't want to use coupled temp-displacement analysis. I like to request node temperatures and node displacements as outputs.

Any idea about how to impose incremental temperature load and get the value of temperature at failure (suppose while the displacement is too high)?

Any suggestion will be highly appreciated.

 

[corus]

I'm not sure why you're using explicit unless it's either highly non-linear or involves impact. I'd run a transient thermal analysis first, save the temperatures and then load them into standard or explicit for the same time period. You can save the temperatures as output as well as all the other results.

corus

 

[mahbub1669]

Thanks corus for your help. I will try with this. I am using the explicit, as the system is highly nonlinear.

cheers

 

[MNS747]

Hi Mahbub

As Corus said, do the transient thermal analysis first and then read the temperatures into your second Static model using "predefined field manager". For different temperatures you can using either "Temperature dependant data" in material properties where you are actually telling abaqus that your material properties changes due to change in temperature.

If you dont want your material properties changed with temperature then you can use "Amplitudes" and put them in your boundary conditions. Hope t his helps

Regards

 

[mahbub1669]

Thanks MNs747 for your suggestion. I will give botha try, and let you know what happens.

cheers