# Variable temperature in a BEAM

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Good afternoon,

I have a BEAM (CBEAM) component and I would like to see how it deforms due to a VARIABLE TEMPERATURE applied to the whole BEAM. Is that possible? Obviously I would only like to see how it deforms on the direction of it's axis (as a BEAM is a 1-D element). The TEMPERATURE would go from 17 to 23 degrees in 6 hours (1 degree increment every hour)

Sergio

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Hi,

this is a simple analysis:

For more advanced thermal simulations please refer to FREE eBook: Learn Thermal Analysis with Altair OptiStruct

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12 hours ago, Simon Križnik said:

Hi,

this is a simple analysis:

For more advanced thermal simulations please refer to FREE eBook: Learn Thermal Analysis with Altair OptiStruct

Okk thanks!!

One more question. It's a different situation. Now I have a One-Step Transient Thermal Stress Analysis (I already checked the info around this). So I did a model with the environment as heat source (the temperature of the surroundings go from 17 to 23 degrees), so I used a TLOAD, TABLED, SPC TEMP, SPCD, TSTEP and TEMP cards to do both a heat tansfer transient and a linear static analysis with the output temperatures. Now, I'd like to create more heat sources (for example due to the heating of a engine). Do I have to create the same cards now for this new source (having in mind that I want to mantain the source of the environment) and then include both TLOADS in a DLOAD? (and therefore introduce this DLOAD in the LoadStep).

Hope I explained well,

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Yes, according to Learn Thermal Analysis with Altair OptiStruct ebook:

Quote

Attached is an example from the ebook which I modified to include multiple heat sources (ambient & local).

Note: The ambient temperature is applied with convection on the outer surface. The local temperature is imposed at one end of the tube. This approach is valid for 3D elements, but not for 1D beams.

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And is there any way of doing it with 1D beams?

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On 3/6/2020 at 10:30 PM, Simon Križnik said:

Yes, according to Learn Thermal Analysis with Altair OptiStruct ebook:

Attached is an example from the ebook which I modified to include multiple heat sources (ambient & local).

Note: The ambient temperature is applied with convection on the outer surface. The local temperature is imposed at one end of the tube. This approach is valid for 3D elements, but not for 1D beams.

And is there any way of doing it with 1D beams?

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