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Difficulty in selecting geometry for boundary condition in a magnetostrictive model.

Posted 13 juin 2019, 15:31 UTC−4 MEMS & Piezoelectric Devices, Structural Mechanics 2 Replies

Abhishek Patel
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Hello everyone, I am working on a magnetostrictive model which is a solid cube and I want to apply periodicity as a boundary condition to vertex to the opposite vertex, edge to opposite edge, and face to opposite face. When I select periodicity as boundary condition it just allows me to select boundaries of the model which are basically faces of the cube. I could apply this boundary conditions in ABAQUS by using a matlab code but I am unable to do it in COMSOL. Is there any way I can select geometry according to my requirement mentioned above??

2 Replies Last Post 18 juin 2019, 14:56 UTC−4
Henrik Sönnerlind COMSOL Employee

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Posted: 5 years ago 14 juin 2019, 03:50 UTC−4
Updated: 5 years ago 14 juin 2019, 03:50 UTC−4

Hi,

Can you supply a sketch? What is the physical background? It is not clear what differentiates the edge and vertex conditions from the boundary conditions.

Regards,
Henrik

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Henrik Sönnerlind
COMSOL
Hi, Can you supply a sketch? What is the physical background? It is not clear what differentiates the edge and vertex conditions from the boundary conditions. Regards, Henrik
Abhishek Patel
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Posted: 5 years ago 18 juin 2019, 14:56 UTC−4
Updated: 5 years ago 18 juin 2019, 14:51 UTC−4

I have attached the sketch of the model that I have been working on. The notations A, AA, B, BB, C, CC, D, DD are vertex points. Notations ZM, ZP, XP, XM are surfaces of the model. the notations U, V, W, S, WW, T, R, SS, UU, RR, TT, VV are the edges of the model. The other image provided explains the type of BCs that has to be applied to the model.

I have attached the sketch of the model that I have been working on. The notations A, AA, B, BB, C, CC, D, DD are vertex points. Notations ZM, ZP, XP, XM are surfaces of the model. the notations U, V, W, S, WW, T, R, SS, UU, RR, TT, VV are the edges of the model. The other image provided explains the type of BCs that has to be applied to the model.

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