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position dependent subdomain value
Posted Jul 1, 2010, 1:10 p.m. EDT 1 Reply
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Hi,
Is it possible to vary a value (e.g. the initial stress of a beam) depending on the z-position in it?
An approximation would be to split the beam into several layers with a changing constant value. But this is of course bad in any way (not correct, time consuming, mesh, ...)
So i would like to write a formula inside of a layer like: "2*z+1"
thank you for any help.
Is it possible to vary a value (e.g. the initial stress of a beam) depending on the z-position in it?
An approximation would be to split the beam into several layers with a changing constant value. But this is of course bad in any way (not correct, time consuming, mesh, ...)
So i would like to write a formula inside of a layer like: "2*z+1"
thank you for any help.
1 Reply Last Post Jul 1, 2010, 4:30 p.m. EDT
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Posted:
1 decade ago
yes, comsol allows you to use expressions instead of constants when you define your model. so equations like "2z+1" should work so long as you define your "work-plane settings" (under the Draw menu) to reflect that the width of the beam is along the z-axis!
Cheers
Ravi
Cheers
Ravi