Proximity Mesh Control

Introduction

Automatic mesh refinement will happen on surfaces that are within proximity distance.

Proximity distance

If the distance between surfaces, not sharing the same edge, are within "Proximity Distance", mesh will be refined on these surfaces. If surfaces are within "Proximity distance" and share a common edge, then mesh refinement will happen if the angle between the surfaces is less than "Angle between entities within proximity".

Angle between entities within proximity

If surfaces are within "Proximity distance" and share a common edge, then mesh refinement will happen if the angle between the surfaces is less than "Angle between entities within proximity".

Minimum element size

Mesh refinement will not create elements with edges smaller than "Minimum element size".

Minimum number of layers

Mesh refinement can create layers of elements in thin sections inside a body. The number of layers can be more than the user defined "Minimum number of layers" provided the edge length is greater than "Minimum element size".

The mesh size on surface that are within "Proximity distance"

The mesh size is computed by the expression "The refined mesh size on the surfaces = Distance between two surfaces/ Minimum number of layers". This is then compared with the "Minimum element size" and "Angle between entities within proximity".

Video

Note:
  • Proximity meshing will work only for meshing CAD bodies, not for FE bodies.
  • Proximity mesh control should not be used with other local mesh controls (Ex: face, iso-line, etc...) except fillet.
  • Minimum element size in Surface / Curve mesh dialog should be lesser than the Minimum element size in proximity mesh control.
  • Recommended Grade factor in Surface / Curve mesh dialog is between 1.2 to 1.3.