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why does deformation remain same?????

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hi,
i have designed a pressure sensor... i am getting different displacement values as output but deformation for all applied pressure is same....why is it so??? wat should i do to get the deformation corresponding to applied pressure

1 Reply Last Post 14 apr 2013, 08:47 GMT-4
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)

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Posted: 1 decade ago 14 apr 2013, 08:47 GMT-4
Hi

what do you mean by deformations are the same ? is it on the 2D or 3D graphics with deformation sub node ?

If so it's probably the automatic scaling between the different pressure values, the displacement appears the same, but the units of the scale changes each time => set the rescaling factor to a constant value

Another way to check is to cut your membrane by a Data Set cut line (or by having the geometry split in the middle of the membrane), and you do a 1D displacement ) or better (u,v,w) line plot across your membrane, for all parametric pressure values, then you have everything on the same scale

--
Good luck
Ivar
Hi what do you mean by deformations are the same ? is it on the 2D or 3D graphics with deformation sub node ? If so it's probably the automatic scaling between the different pressure values, the displacement appears the same, but the units of the scale changes each time => set the rescaling factor to a constant value Another way to check is to cut your membrane by a Data Set cut line (or by having the geometry split in the middle of the membrane), and you do a 1D displacement ) or better (u,v,w) line plot across your membrane, for all parametric pressure values, then you have everything on the same scale -- Good luck Ivar

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