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Apply a point load on an arbitrary point?

Posted Jan 10, 2019, 2:45 a.m. EST Structural & Acoustics, Acoustics & Vibrations Version 5.3a 1 Reply

Dongdong Zhang
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I am a new in Comsol. Now i want to compute frequency response of a composite plate under a point load. i want to define the load on the arbitrary point. So i defined a point at geometry node, but it showd not applicable when the load is defined. So how to define a load on an arbitrary point? Thank you !

1 Reply Last Post Jan 10, 2019, 7:33 a.m. EST
Henrik Sönnerlind COMSOL Employee

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Posted: 6 years ago Jan 10, 2019, 7:33 a.m. EST
Updated: 6 years ago Jan 10, 2019, 8:32 a.m. EST

Hi,

In principle, you are doing the right thing, so there must be some issue in how the point is included in the model.

This said, you can also add a point load at a completely arbitrary point (which may even be located at the interior of an element). This is more advanced, and requires the use of a probe (to capture the displacement into a variable) and a weak contribution (to specify the loading).

Regards,
Henrik

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Henrik Sönnerlind
COMSOL
Hi, In principle, you are doing the right thing, so there must be some issue in how the point is included in the model. This said, you can also add a point load at a completely arbitrary point (which may even be located at the interior of an element). This is more advanced, and requires the use of a probe (to capture the displacement into a variable) and a weak contribution (to specify the loading). Regards, Henrik

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