Hello,
hopefully someone can give me a few hints. I'm going through the Abaqus learning module "Tire Analysis with Abaqus-Fundamentals" and facing a problem. I'm using Abaqus 2024.
The aim is to build up an axisymmetric tire model. It consists of a rubber matrix with embedded reinforcements.
Here are some details:
- The carcass (the main rubber matrix) is defined as axisymmetric, deformable shell (with twist).
- Reinforcements are modeled as axisymmetric, deformable wire parts (with twist).
- Some of the reinforcements are having orientation angles differing from zero.
- The reinforcements are embedded using an "embedded region"-constraint.
- As boundary conditions I have fixed the rim-tire contact area and defined a symmetry boundary condition (U2=UR2=0).
- On the inner liner acts a pressure load.
When I'm running the simulation I recognized that the axisymmetric model deforms in global x and y-direction, but also in z-direction. It seems that the embedded reinforcements with an orientation angle are forcing the model to deform in the global z-direction. In my opinion there should not be a deformation in z-direction since I'm computing an axisymmetric shell model. The displacement in z-direction is also present when I'm refining the mesh or by using quadratic elements. Is there a numerical reason for this spatial deformation or am I doing something wrong? Do you know how to deal with this?
