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Solid mechanics/ Thermal expansion

Posted 08.07.2014, 06:46 GMT-4 Modeling Tools & Definitions, Parameters, Variables, & Functions, Structural Mechanics Version 4.3 2 Replies

Dat Nguyen
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Hi,
I'm trying to simulate stress induced by thermal expansion (as a result from femtosecond laser).
- My geometry is simply just an ellipse placed inside a rectangle. (please see the attached)
- Material: LiNbO3 crystal
- I suppose the femtosecond laser will create a thermal effect within an elliptical shape, as a result from thermal expansion, the ellipse will swell and generate stress at the border.
- I will assume the volume change is deltaV/V = 5e-3
- My target is to establish a relationship between the stress and volume change caused by thermal expansion.

I'm a beginner.
I would very much appreciate it if you can help me sort this out.
Thank you
D.
2 Replies Last Post 09.07.2014, 04:32 GMT-4
Marwan Nafea
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Posted: 1 decade ago 09.07.2014, 01:59 GMT-4
Hi Dat,

I think you forgot to upload the file. Please check.

Best regards,
Marwan
Hi Dat, I think you forgot to upload the file. Please check. Best regards, Marwan
Pieter Westerik
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Posted: 1 decade ago 09.07.2014, 04:32 GMT-4
Maybe you can have a look in the model library, heat transfer module -> thermal stress -> surface resistor.
Maybe you can have a look in the model library, heat transfer module -> thermal stress -> surface resistor.

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