Stress evolution during solidification

dendritic solidification, eutectics, peritectics,....
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G_azizi
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Stress evolution during solidification

Post by G_azizi » Tue Jun 14, 2022 5:31 pm

I am trying to simulate phase transformation and thermal stress evolution during steel solidification. the elasticity and TLE data are correct I think. but the stress level I get is unreasonably high (around 10000). is the stress output unit MPa? if yes, it is totally wrong.
I have attached a screenshot of elasticity data, BCs, convergence criteria, and xx-stress output.

Would you please help to find the problem? why stress level is so high?
Attachments
stress level.png
stress level.png (149.97 KiB) Viewed 154 times
elasticity input.png
elasticity input.png (77.22 KiB) Viewed 154 times
BCs and convergence criteria.png
BCs and convergence criteria.png (35.39 KiB) Viewed 154 times

Bernd
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Joined: Mon Jun 23, 2008 9:29 pm

Re: Stress evolution during solidification

Post by Bernd » Tue Jun 14, 2022 11:53 pm

Hi Ghavam,

I think the problem could be that the thermal expansion coefficients which you are using are 2-3 orders of magnitude too high. It is length and not volume expansion which is required here.

Bernd

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