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modelling in comsol multiphysics
Posted Dec 18, 2010, 10:16 a.m. EST Modeling Tools & Definitions, Parameters, Variables, & Functions, Structural Mechanics Version 3.5a 1 Reply
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Hi,
I'm a beginer in comsol; I would to model with a PDE Mode coupled by a plane strain module. In comsol multiphysics plane strain module, in subdomain settings there is no possibility to put different material properties for diffreent directions (see the 1 attached file).
But external to Comsol Multiphysics, specifically in structural mechanics module, one can apply n ot isotropic materials. why is that?
Someone can help me?
Another question is: Can I coupling a PDE Mode (with Comsol Multiphysics) with a plane strain module from structural mechanics? That is because I have an orthotropic material.
Thank you the whole people that ever seen this post
I'm a beginer in comsol; I would to model with a PDE Mode coupled by a plane strain module. In comsol multiphysics plane strain module, in subdomain settings there is no possibility to put different material properties for diffreent directions (see the 1 attached file).
But external to Comsol Multiphysics, specifically in structural mechanics module, one can apply n ot isotropic materials. why is that?
Someone can help me?
Another question is: Can I coupling a PDE Mode (with Comsol Multiphysics) with a plane strain module from structural mechanics? That is because I have an orthotropic material.
Thank you the whole people that ever seen this post
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1 Reply Last Post Dec 19, 2010, 3:56 a.m. EST
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Posted:
1 decade ago
Hi
What do you mean by different material properties in different direction ?
materials are isotropic or anisotropic with some grades in between, but for this you need to define the stress tensor fully, COMSOL have different combinations made up reasdily. Check the doc about anisotropic material (such as crystals or sometime fibred material). The main difficulty with these materials are to define correctly the direction, and to get univoquely the material constants (as often there are several to adjust)
--
Good luck
Ivar
What do you mean by different material properties in different direction ?
materials are isotropic or anisotropic with some grades in between, but for this you need to define the stress tensor fully, COMSOL have different combinations made up reasdily. Check the doc about anisotropic material (such as crystals or sometime fibred material). The main difficulty with these materials are to define correctly the direction, and to get univoquely the material constants (as often there are several to adjust)
--
Good luck
Ivar