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. Please click on thumbnails for larger images.

Flow distributor.
Structure.
Outer basket.
Mechanical part.
Mechanical part.
Mechanical part.
Crankshaft.
The Enterprise.
Gears.
Fan.
Lego formula 1.
Ice cream scoop.
Scissors.
Loudspeaker.
Potentiometer.
 

Other ADINA Mesh Generation Features:

Triangular Surface Meshing Quadrilateral Surface Meshing
Mapped Meshing Tetrahedral Meshing Mesh Adaptation-Repair
Anisotropic Meshing Automatic Grading Curvature-based Meshing

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