Tetrahedral Meshing
Bodies can be triangulated in ADINA using either an advancing front or a Delaunay mesher.
Advancing Front
- A standard advancing front methodology is applied in 3D space.
- Sizes are controlled by an octree.
- Elements are created considering a minimum quality threshold, which can be repeatedly relaxed if the algorithm does not converge.
- There is no optimization nor smoothing applied to the obtained mesh.
Delaunay
- A standard 3D Delaunay insertion algorithm is applied in 3D space.
- It is assumed the input surface mesh given to the mesher is not to be modified, meaning, a strong boundary recovery scheme is employed.
- Sizes are controlled using interpolation on the current mesh.
- Resulting mesh is optimized and smoothed.
Remarks
- The advancing front mesher is relatively slow and lacks robustness for complicated geometries. It however creates high quality meshes when it converges easily.
- The Delaunay mesher is robust and relatively fast.
- The Delaunay mesher is ADINA's default mesher because of its robustness. It also supports anisotropic mesh generation and mesh adaptation.
- Both 3D meshers can be used with either the advancing front or Delaunay surface mesher.
Image Gallery
The following images show some meshes obtained with the Delaunay mesher.
Figure 1 Flow distributor
Figure 2 Structure
Figure 3 Outer basket
Figure 5 Mechanical part 1
Figure 6 Mechanical part 2
Figure 7 Mechanical part 3
Figure 8 Crankshaft
Figure 9 The Enterprise
Figure 10 Gears
Figure 11 Fan
Figure 12 Lego Formula 1
See also the following meshing methods in ADINA: