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Comsol moving boundary with loss of mass

  1. Jan 30, 2013 #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. jcsd
  3. Feb 7, 2013 #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/ [Broken]
    Niklas (COMSOL employee)
    Last edited by a moderator: May 6, 2017
  4. Feb 7, 2013 #3
    This might help you in explanation.
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