Block3D Command

The block3D command generates three-dimensional meshes of eight-node brick solid element.

block3d $nx $ny $nz $e1 $n1 element elementArgs {

1 $x1 $y1 <$z1>

2 $x2 $y2 <$z2>

3 $x3 $y3 <$z3>

4 $x4 $y4 <$z4>

5 $x5 $y5 $z5

6 $x6 $y6 $z6

7 $x7 $y7 $z7

8 $x8 $y8 $z8

<9> <$x9> <$y9> <$z9>

...

<27> <$x27> <$y27> <$z27>

}

---

$nx	number of elements in the local x directions of the block
$ny	number of elements in the local y directions of the block
$nz	number of elements in the local z directions of the block
$e1	element from which the mesh generation will start
$n1	node from which the mesh generation will start
element	string defining which brick elements is being used (stdBrick, bbarBrick, or Brick20N)
elementArgs	list of data parameters for element being used
{$x1, .... ,$x27}	coordinates of the block elements in three dimensions
{$y1, .... ,$y27}
{$z1, .... $z9}

---

NOTE:

1. Only the first four nodes (1-4) are required. Nodes 5-9 are used to generate curved meshes. The user may specify any combination of nodes 5-9, omitting some of them if desired.

2. This command recognizes variable substitutions when the command arguments are placed in quotes.

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EXAMPLE:

block2D 16 4 1 1 quad "1 PlaneStrain2D 1" {

1 0 0

2 40 0

3 40 10

4 0 10

}

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Node numeration of a quadrilateral element: