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Force/stress with no direction

Posted 13 juil. 2012, 07:07 UTC−4 Materials, Structural Mechanics Version 4.2, Version 4.2a 0 Replies

Andreas Naesby
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Hey,

I'm trying to implement a isotropic stress due to a photon absorption. I know that this should lead to a volume expansion locally dependent on the local light field intensity, but I do not know implement the stress as a body load in Comsol.
A force in Comsol has to have a direction compared to the coordinate system, but how do you implement a isotropic expansion/stress? A local volume expansion would also be a possibility.

A photon absorption leads to an expansion through a known process but there is not any direction.

Thank you ;-)

Andreas
0 Replies Last Post 13 juil. 2012, 07:07 UTC−4
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Hello Andreas Naesby

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