[Solved] Temperature effect FEM (Unsure)

About the development of the FEM module/workbench.

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dinodano
Posts: 11
Joined: Mon Jun 06, 2022 5:42 am

[Solved] Temperature effect FEM (Unsure)

Post by dinodano »

I am trying to simulate a model (530 x 30 x 20 mm) sitting on a flat surface. With this simulation, I would like to see the elongation of the model when it increases from 20C to 21C.
The conditions are:
The bottom surface will be subjected to a 'heat source' of 21C.
The surrounding temperature and initial temperature is 20C.
The model I'm using is from Mitutoyo, so on the FEM material, I selected Glass-generic and edited the expansion coefficient to be 0.08 micro. I've also changed the specific heat and thermal conductivity. (Is this the right way going about it?)

With that, I've input the material, constraint displacement, constraint initial temperature, constraint temperature, constraint heat flux and Nmesh (2.5). I ran it through the solver with thermo mechanical selected.
I would like to ask if I am doing this correctly? This is my first time using constraint heat flux an constraint temperature. I'm not sure if I selected the correct faces/reference and if I'm using the function correctly at all. Please advise.

Thank you in advance :)

OS: Windows 10 Version 2009
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.24267 +148 (Git)
Build type: Release
Branch: Branch_0.19.4
Hash: 476ecf091941bead59b14e44afa6064d5a66afa3
Python version: 3.8.6+
Qt version: 5.15.2
Coin version: 4.0.1
OCC version: 7.5.3
Locale: English/Singapore (en_SG)
Attachments
temperature_Nmesh_5.FCStd
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NewJoker
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Posts: 3017
Joined: Sun Oct 11, 2020 7:49 pm

Re: [Help] Temperature effect FEM (Unsure)

Post by NewJoker »

Both temperature gradient and thermal expansion coefficient are very low here so you will see little deformation but the definition of the model seems correct.
dinodano
Posts: 11
Joined: Mon Jun 06, 2022 5:42 am

Re: [Help] Temperature effect FEM (Unsure)

Post by dinodano »

Yea there is very little deformation :lol:

Thank you for the verification :D
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