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solids4foam shell elements/formulation

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Old   December 8, 2023, 05:33
Default solids4foam shell elements/formulation
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Philip Cardiff
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Question:
Can solids4foam handle shell elements? In particular, with a stacking of several orthotropic materials

Response:
Currently, solids4foam does not currently have general shell element implementation. The closest thing is simple flat "plate" implementation: https://github.com/solids4foam/solid...msPlatesShells and beam formulations: https://www.researchgate.net/publica...ial_curvatures and https://www.researchgate.net/publica...er_Beam_Theory.

Of course, there is a potential for shells to be added in the future, e.g. extend the Simo-Reissner beams to shells.
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Old   April 9, 2024, 20:11
Default Use orthotropic materials in FSI
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Andy Valdés
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Hi,

But if one wants, for example, to change the material of the beamInCross tutorials for an orthotropic one, in order to do an analysis for a material made from 3D printing. Is this possible? If it is not possible: is it possible to make a single section of the model with orthotropic considerations (example plateHole) and for example use FSI approach to see the displacement in 2D? (with orthotropic material).

Thanks for your help

Last edited by andyvaldes10; April 9, 2024 at 20:12. Reason: orthography
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Old   April 10, 2024, 08:00
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Quote:
Originally Posted by andyvaldes10 View Post
Hi,

But if one wants, for example, to change the material of the beamInCross tutorials for an orthotropic one, in order to do an analysis for a material made from 3D printing. Is this possible?
Yes, for finite strain (nonlinear geometry) solid models, you can use
Code:
type StVenantKirchhoffOrthotropicElastic;
E1   E1 [1 -1 -2 0 0 0 0] 200e9;
E2  ...
etc
and for small strain (linear geometry)
Code:
type orthotropicLinearElastic;
E1   E1 [1 -1 -2 0 0 0 0] 200e9;
E2  ...
etc
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Old   April 10, 2024, 08:04
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The material directions can be either specified in mechanicalProperties if uniform (materialDirectionsX (1 0 0)) or as a field in the time directory if varying.
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Old   April 10, 2024, 11:57
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Quote:
Originally Posted by bigphil View Post
Yes, for finite strain (nonlinear geometry) solid models, you can use
Code:
type StVenantKirchhoffOrthotropicElastic;
E1   E1 [1 -1 -2 0 0 0 0] 200e9;
E2  ...
etc
and for small strain (linear geometry)
Code:
type orthotropicLinearElastic;
E1   E1 [1 -1 -2 0 0 0 0] 200e9;
E2  ...
etc

Thanks. i'll try
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