Boundary conditions Abaqus
Boundary conditions Abaqus
(OP)
Good morning everyone,
I was wondering if there is a way to force two nodes to have the same displacements without giving them values of these displacements.
I'm going to explain with more details: i am working on a cellular material (foam with open cells), so i've modelized one cell of it (Kelvin cell) and i am doing the boundary conditions so some nodes should have identical boundary conditions (because when i assemble many cells together, some nodes connected should have the same displacements. The question is: how could i make similar displacements for two nodes without giving these displacements a particular value.
Thank you in advance,
Sarah
I was wondering if there is a way to force two nodes to have the same displacements without giving them values of these displacements.
I'm going to explain with more details: i am working on a cellular material (foam with open cells), so i've modelized one cell of it (Kelvin cell) and i am doing the boundary conditions so some nodes should have identical boundary conditions (because when i assemble many cells together, some nodes connected should have the same displacements. The question is: how could i make similar displacements for two nodes without giving these displacements a particular value.
Thank you in advance,
Sarah





RE: Boundary conditions Abaqus
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RE: Boundary conditions Abaqus
RE: Boundary conditions Abaqus
RE: Boundary conditions Abaqus
I am sorry for disturbing you again, i want to use the option of equation constraint to do the periodicity in my kelvin cell, equations should be:
1)Ui1 - Ui2 = Ui1(ref) - Ui2(ref) with i=1,2,3 (Uij(ref) are displacements of conjuguate points)
2)Oi1 - Oi2 = 0 with i=1,2,3 (O is theta the rotation)
but how can i introduce these equations in the equation constraints in Abaqus? can someone please tell me the steps i should do? (i've seen this part in the abaqus tutorial but still don't know how to do it)
thank you in advance
sarah
RE: Boundary conditions Abaqus
Search for Applying Periodic Boundary Conditions in Finite Element Analysis in the PDF. There is more content available online, just in case you require additional help.