Temperature mapping.

Altair Forum User

Hello.

 

I'm currently working on a thermo-structural analysis of a telescope. The structural and thermal analysis has been carried out separately with different mesh (structural analysis mesh-330000 elements, thermal-5000 elements). The thermal analysis with a coarse mesh comprising of 5000 elements, is done in NX and the temperature data at a particular time step is extracted in excel format. Now, to perform thermo-structural analysis in Hypermesh, i have to map this temperature data onto the fine mesh (330000 elements one). But i'm struck here. I have no idea how to import the excel data. Another problem is that the mesh is also different. I'm going with the optistruct solver as i have to introduce mechanical loads onto the telescope apart from thermal loads.

 

How to proceed with this problem? any suggestions are welcome. Thanks.

Q.Nguyen-Dai

Try method 'linear interpolation'

<?xml version="1.0" encoding="UTF-8"?>

 

'nodes' => fine mesh

'file' => temperature field from txt file in form :

X-coordinate Y-coordinate Z-coordinate Temperature

 

 

Altair Forum User

How to use this temperature in optistruct ? It doesn run in optistruct if we the same method as that of flux input.

Altair Forum User

Altair Forum User said:

Try method 'linear interpolation'

<?xml version="1.0" encoding="UTF-8"?>

 

'nodes' => fine mesh

'file' => temperature field from txt file in form :

X-coordinate Y-coordinate Z-coordinate Temperature

 

 

 

Altair Forum User said:

Try method 'linear interpolation'

<?xml version="1.0" encoding="UTF-8"?>

 

'nodes' => fine mesh

'file' => temperature field from txt file in form :

X-coordinate Y-coordinate Z-coordinate Temperature

 

 

Can you please share any the run-able fem file for my reference, ?

Rahul Rajan_21763

Can you please check the below video from simlab learning center.

SimLab Tutorials - Thermal FSI of Exhaust Manifold_Solution Browser - Altair

 

Altair for SimLab Learning Center

Junta_20361

Altair Forum User said:

Try method 'linear interpolation'

<?xml version="1.0" encoding="UTF-8"?>

 

'nodes' => fine mesh

'file' => temperature field from txt file in form :

X-coordinate Y-coordinate Z-coordinate Temperature

 

 

Hi Q.Nguyen-Dai,

i have followed your method but not succeed. (i tried with several different models)

the temperature load in Hypermesh (after linear interpolation) is all '0-zero' value.

Can you help check my attached files in below?

Thanks in advance!

<?xml version="1.0" encoding="UTF-8"?>

<?xml version="1.0" encoding="UTF-8"?>

Unable to find an attachment - read this blog

Rahul Rajan_21763

Please the check the SimLab load mapping capabilities.

Altair for SimLab Learning Center

Q.Nguyen-Dai

@Duc_Hoang: Mapping works well with Hypermesh. But make sure you have the same 'mapping field' (your CSV file) and target mesh. Both should present same volume 3D.