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Comsol moving boundary with loss of mass 
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#1
Jan3013, 08:26 AM

P: 1

I need some help!My problem is a problem of moving boundary with loss of mass.... I started to use COMSOL and I need to simulate one plate with a hole on the center. And this hole is increasing with the time according to one equation (like a velocity, in m/s) which depend of the stress. Someone knows how to do this? Can I do this whit the moving mesh? Or I should use the DG?
Thank you! 


#2
Feb713, 03:09 AM

P: 2

It is not clear to me what exactly you mean with mass loss here. If the structure is changing shape due to applied stress (>strain), use the Moving Mesh interface. If the structure is changing shape due to material removal/addition, use the Deformed Geometry interface. This link gives some more info:
http://www.comsol.com/support/knowledgebase/970/ regards Niklas (COMSOL employee) 


#3
Feb713, 06:22 AM

P: 2

This might help you in explanation.



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