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Determining area and volume of axis-symmetric object

Posted Jan 20, 2012, 5:02 a.m. EST Results & Visualization, Structural Mechanics Version 4.2a 2 Replies

Christian Kelb
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Hi!

I'm modeling a membrane as an axis-symmetric object. Can you tell me how I can determine the area and the volume of the upper side of the deflected membrane?

I understand there have to be integration-nodes for this tasks in the postprocessing. But where?

Best regards,
Christian Kelb

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2 Replies Last Post Jan 20, 2012, 5:01 p.m. EST
Pranay Ghosh
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Posted: 1 decade ago Jan 20, 2012, 9:37 a.m. EST
you can take the volume integration with parameter as 1 with dataset "revolution" 0 to 360 to get the volume
you can take the volume integration with parameter as 1 with dataset "revolution" 0 to 360 to get the volume
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Jan 20, 2012, 5:01 p.m. EST
Hi

in 2D axis-symmetry, when you integrate over an edge and use the integrand 2*pi*r you get the revolved surface, but if you define your integration operator, you can check the surface to volume box, then the 2*pi*r are automatically added. Check the units to be sure you have it right.

There are several threads on the forum about this

--
Good luck
Ivar
Hi in 2D axis-symmetry, when you integrate over an edge and use the integrand 2*pi*r you get the revolved surface, but if you define your integration operator, you can check the surface to volume box, then the 2*pi*r are automatically added. Check the units to be sure you have it right. There are several threads on the forum about this -- Good luck Ivar

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