04 Jan 2020 Mirror Symmetry
Mirror Symmetry is the most commonly used form of Symmetry in simulation models. It can be used when both the geometry and loads are mirror symmetrical relative to the same plane.
Depending on the number of symmetry planes in the model, the model can be the following:
- Half Model (1 symmetry plane)
- Quarter Model (2 symmetry planes)
- Eighth Model (3 symmetry planes)
- Pie-Cut Model (2 symmetry planes not at 90 degrees)
On a mirror symmetry model, boundary conditions are applied to ensure that there is neither translational movement perpendicular to the symmetry plane nor rotational movement about the axes in the plane of symmetry.
If the loads are antisymmetric about the plane of symmetry, antisymmetric boundary conditions are used so that the translational movement in the symmetry plane and rotational movement normal to the plane of symmetry are constrained.
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