Difference between revisions of "FEA Region and Hole Commands"

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== Scripted Input Files ==
== Scripted Input Files ==


Once the mesh is [[Create a Mesh with Images and Shapes|ready to use shapes]], elements are assigned to materials by using a series of Region, Hole, and BMPRegion commands. The Region command defines material type, thickness, and angle (needed for some Material types). Between the Region command and the subsequent EndRegion command, there can be any number of geometric commands that define the geometry whose element will use that material. The structure for 2D FEA is:
Once the mesh is [[Create a Mesh with Images and Shapes#Introduction|ready to use shapes]], elements within shapes are assigned to materials by using a series of <tt>Region</tt> commands. The <tt>Region</tt> command defines material type, thickness, and angle (needed for some [[FEA Material Models|anisotropic materials]]):
 
Region (matid),(thick),<(angle)>
  (any number of shape commands)
EndRegion


Region #1,#2,<#3>
  Rect #1,#2,#3,#4
    .
  Oval #1,#2,#3,#4
    .
  PolyPt #1,#2
  PolyPt #1,#2
  PolyPt #1,#2
  PolyPt #1,#2
  PolyPt
    .
EndRegion
where
where


#1 is the material ID for a previously defined material.
* (matid) is the material ID for a previously defined material.
#2 is the thickness of the region in mm.
* (thick) is the thickness of the region in mm.
#3 is an optional angle for the material which is only relevant for anisotropic materials. It can be entered as a number or as a user-defined function of the coordinates for the element centroid. The units are degrees.
* (angle) is an optional angle for the material which is only relevant for anisotropic materials. It can be entered as a number or as a [[User Define Functions|user-defined function]] of the coordinates for the element centroid. The units are degrees.
 
Between the <tt>Region</tt> command and the subsequent <tt>EndRegion</tt> command, there can be any number of [[#Rect Command|<tt>Rect</tt>]],  [[#Oval Command|<tt>Rect</tt>]], and [[#PolyPt Command|<tt>PolyPt</tt>]]commands to define the geometry whose elements will use the region's material properties.

Revision as of 12:03, 13 September 2013

When using shapes to define an FEA mesh, use a Region command to define material properties assigned to each shape.

Scripted Input Files

Once the mesh is ready to use shapes, elements within shapes are assigned to materials by using a series of Region commands. The Region command defines material type, thickness, and angle (needed for some anisotropic materials):

Region (matid),(thick),<(angle)>
  (any number of shape commands)
EndRegion

where

  • (matid) is the material ID for a previously defined material.
  • (thick) is the thickness of the region in mm.
  • (angle) is an optional angle for the material which is only relevant for anisotropic materials. It can be entered as a number or as a user-defined function of the coordinates for the element centroid. The units are degrees.

Between the Region command and the subsequent EndRegion command, there can be any number of Rect, Rect, and PolyPtcommands to define the geometry whose elements will use the region's material properties.