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Thermal expansion issues

Posted 2 sept. 2015, 08:28 UTC−4 Heat Transfer & Phase Change, Structural Mechanics Version 4.4 1 Reply

Joshua Stimson
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Hi everyone,

I'm currently trying to model the thermal expansion of a block of silicon. I've set up my geometry, materials and physics, and if I disable the thermal coupling everything works. However, the only way I can get the thermal coupling to work is if I set an edge or face as a Fixed Constraint, which ruins the thermal expansion on that face, or if I set the entire component as a Rotating Frame with 0 Angular Velocity, which generates a ridiculous amount of data which is irrelevant to my simulation. Is there a better way to model the block in isolation?

I've uploaded the model in case that helps you understand what I'm trying to achieve.

Many thanks,

Josh
1 Reply Last Post 2 sept. 2015, 11:05 UTC−4
Henrik Sönnerlind COMSOL Employee

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Posted: 9 years ago 2 sept. 2015, 11:05 UTC−4
Hi,

I suggest that you read e.g. section 7.6.2 in www.colorado.edu/engineering/CAS/courses.d/IFEM.d/IFEM.Ch07.d/IFEM.Ch07.pdf

Regards,
Henrik
Hi, I suggest that you read e.g. section 7.6.2 in http://www.colorado.edu/engineering/CAS/courses.d/IFEM.d/IFEM.Ch07.d/IFEM.Ch07.pdf Regards, Henrik

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