Symmetric boundary condition help
Symmetric boundary condition help
(OP)
Hello,
I'm working on a hyperelastic model that consists of a sheet of rubber. It's undergoing uniaxial tension so there are 3 planes of symmetry which allows me to model only 1/8th of the sheet. (The sheet is cut into 4 sections and one of those sections is cut into 4 again)
My question is:
I'm used to modelling linear elastic/general structural problems with fairly simple planes of symmetry. I've not handled hyperelastic simulations before so I don't intuitively see the appropriate boundary conditions for each side when modelling for symmetry.
Can you point me in the right direction? Do I just restrain perpendicular translations but allow rotations or what?
Cheers in advance,
Matonking
I'm working on a hyperelastic model that consists of a sheet of rubber. It's undergoing uniaxial tension so there are 3 planes of symmetry which allows me to model only 1/8th of the sheet. (The sheet is cut into 4 sections and one of those sections is cut into 4 again)
My question is:
I'm used to modelling linear elastic/general structural problems with fairly simple planes of symmetry. I've not handled hyperelastic simulations before so I don't intuitively see the appropriate boundary conditions for each side when modelling for symmetry.
Can you point me in the right direction? Do I just restrain perpendicular translations but allow rotations or what?
Cheers in advance,
Matonking





RE: Symmetric boundary condition help
Secondly, depending on the type of elements you choose, you may/may not have to constrain rotations.
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