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Applying boundary load over specified length

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Hi guys,

I have applied a force over an elastic domain to cause deformation. However, I do not want the force to be applied over the whole domain. Rather, I want to only apply the force over the first 3/10 of the length. How would I specify this?

Thanks

2 Replies Last Post 12 mars 2014, 14:36 UTC−4
Magnus Ringh COMSOL Employee

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Posted: 1 decade ago 12 mars 2014, 04:35 UTC−4
Hi,

There are a couple of ways you can do this (examples below are for a force along a boundary in 2D):

- Add a couple of points to the geometry along the boundary where you want to apply the force. COMSOL then creates a separate boundary segment between those points, which you can select as the boundary to apply the force to.

- Use a Boolean expression to apply a force along only part of the boundary, such as

Force*(x>0 && x<0.3)

if the boundary is oriented in the x direction, and Force is the applied force (a value, expression, or parameter). That force then is nonzero only where x > 0 and < 0.3.

Best regards,
Magnus Ringh, COMSOL
Hi, There are a couple of ways you can do this (examples below are for a force along a boundary in 2D): - Add a couple of points to the geometry along the boundary where you want to apply the force. COMSOL then creates a separate boundary segment between those points, which you can select as the boundary to apply the force to. - Use a Boolean expression to apply a force along only part of the boundary, such as Force*(x>0 && x 0 and < 0.3. Best regards, Magnus Ringh, COMSOL

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Posted: 1 decade ago 12 mars 2014, 14:36 UTC−4
Hello Magnus,

Thank you very much for the help!!! It worked out perfectly

Best,
Aaron
Hello Magnus, Thank you very much for the help!!! It worked out perfectly Best, Aaron

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