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Shrinkage of hollow sphere

Posted 13 sept. 2013, 09:31 UTC−4 Version 4.3a 1 Reply

George Xanthopoulos
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Hi, I'm working on diffusion of a hollow sphere (axisymmetric 2D). I have set up the problem for constant external radius and I moved on to the ALE method of simulating the shrinkage of the external dimension (the inner radius is constant). I have a problem setting up the boundary conditions. I attached a pdf file where I explained what BC's I have chosen.

Domain - Free deformation zero initial displacements
Outer boundary - Prescribed mesh displacement (constant displacement in r & z directions)
Axis of symmetry - Prescribed mesh displacement (constant displacement in r & z directions)
Inner boundary - Prescribed mesh displacement (zero displacement in r & z directions)

Any suggestions?

Thanks

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1 Reply Last Post 9 oct. 2014, 05:10 UTC−4
COMSOL Moderator

Hello George Xanthopoulos

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Kishore Gajula
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Posted: 1 decade ago 9 oct. 2014, 05:10 UTC−4
did you figure out the problem how to solve??
did you figure out the problem how to solve??

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