Variable temperature in a BEAM

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)

Thanks a lot in advance!

Sergio

Find more posts tagged with

English

OptiStruct

Accepted answers

All comments

Simon Križnik

Hi,

this is a simple analysis:

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

Unable to find an attachment - read this blog

svez

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,

Thanks a lot in advance

Unable to find an attachment - read this blog

Simon Križnik

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

When there is only one TLOADi present in the model setup, it can be directly referred by the DLOAD subcase entry in Heat Transfer (Transient) load step. In case of multiple TLOADi definitions, user needs to create another load collector with card image DLOAD, in which all TLOADi IDs must be referred with proper scaling factors and global scale factor. The DLOAD load collector is then referred in DLOAD subcase entry in load step definition

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.

Unable to find an attachment - read this blog

svez

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

svez

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?

Unable to find an attachment - read this blog