Introduction to Shell Meshing
Usages of shell meshing:
-Thin sheet solid modeling (FEA) – stamped parts
-2D cross sectional analysis (CFD)
-Input for volume meshing (FEA/CFD) – Delaunay, Advancing Front, T-grid
.Filling a surface mesh is faster than tetra octree but requires well-connected geometry
Procedure
-First need to decide mesh setup parameters
.Mesh method
Algorithm used to create mesh
.Mesh type
quad/tri/mix
.Mesh sizes
Small enough to capture physics, important features
Large enough to reduce grid size (number of elements)
Memory limitations
Faster mesh/solver run
-Set mesh sizes on parts, surfaces, and/or curves
-Based on edge length
Can have different types/methods set on different surfaces
Global Mesh Setup
Global Shell Meshing Parameters
Part Mesh Setup
Local Surface Mesh Setup
Surface Mesh Setup
-Same parameters as part mesh setup but also includes:
Mesh type
Mesh method
-Select surfaces first from screen, set sizes/parameters and Apply
-Mesh method/type will override global shell mesh settings for selected surface(s)
-Will override Part Mesh Setup settings if set afterward
-Display
Right mouse, select in Model tree on Surfaces > Tetra/Hexa Sizes
Icon appears for each surface
Gives you a visual estimate of prescribed max. size
Local Curve Mesh Setup–General
Local Curve Mesh Setup – Dynamic and Copy
Curve Mesh Setup
-Dynamic
Adjust mesh parameters on screen
Interactively toggle displayed values near curve with left (to increase)/right mouse (to decrease) keys
-Copy Parameters
.Copy parameters set on one curve to others
.e.g. parallel curves downstream
-Curve Mesh Setup will override Part Mesh Setup parameters if set after
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