Have you read up on existing work on the same? The material model you choose depends on what you want to model- for example, you get Mooney-Rivlin with certain assumptions/simplifications applied on the Ogden model, and you get the Neo-Hookean on further simplifying the Mooney-Rivlin model. They...
No, this is simple uniaxial loading. What I mean when I say that there are an infinite number of solutions for {F} = [k]*{u} is that these are just equations of equilibrium, and do nothing to prevent rigid body motion, simply because only the differences in the u's are important- basically the...
Thanks a lot for your help! I will try out what eng23bio suggested.
About what IceBreakerSours said about rigid body rotation- my problem is that when I apply loads at the nodes, like I said I had done in the previous problem, rigid body rotation does occur. Even though the diplacements I have...
Hi,
I am modelling uniaxial loading on a unit cube. I have applied concentrated loads on the vertices to do this. My mesh size is the same as that of the cube, which makes it a single-element model.
However, when I view the displacement results, rigid-boy motion has occurred. I cannot apply a...
Thank you for your reply. The boundary condition does get promoted to the next step. I also checked the contact pressure, and that is non-zero throughout the process, so I guess that loss of contact is not the problem. Could there be another reason for such a sharp change in shear? (It goes from...
Hi I am fairly new to Abaqus. I am modeling the interaction of a steel probe
with a hyperelastic material. Both are 2-d shells. The hyperelastic material
is a square. The tool touches the square at the center of one edge. There
are 2 Static, General steps. In step-1, the tool pushes into the...
