Page 7: BlockM

Figure 1 - BlockM Interface

Purpose: This interface is for index based mesh generation and is similar to mesh generation methods used in LS-INGRID. This capability is under development and eventually will be expanded to be a very powerful addition to LS-PrePost.

The following documents contain the latest information regarding this interface (updated 23-Apr 2007): User_Guide.pdf, Examples.pdf

Controls:

Create - Create blocks

Type: Select block type (Single, Multiple, Butterfly)

Single Block: (see Figure 2)

ID: Enter block ID
Name: Enter name of block

P1-8 - Pick point on model to define Points 1-8

P1-8

Call Position Dialog to define Points 1-8

Num of Elements (I J K): Enter number of elements along IJK axes

Multiple Blocks: (see Figure 3)

Start ID: Enter start block ID
Pref.Name: Enter pref. name of the block

I Index List: I coordinates of blocks' list
J Index List: J coordinates of blocks' list
K Index List: K coordinates of blocks' list
X Position List: X coordinates of blocks' list
Y Position List: Y coordinates of blocks' list
Z Position List: Z coordinates of blocks' list

Butterfly Blocks:

Start ID: Enter start block ID
Density: Enter density of the cylinder's perimeter
Radius: Enter radius of the cylinder
Length: Enter length of the cylinder
Num Elem(R): Enter number of elements in R direction of the cylinder
Num Elem(L): Enter number of elements in L direction of the cylinder

Is Tubal - Toggle tube type on/off
Inner R: Enter inner radius

Position

Call Position Dialog for cylinder

X: Enter x-coordinate of cylinder
Y: Enter y-coordinate of cylinder
Z: Enter z-coordinate of cylinder

Direction

Call Direction Dialog for cylinder

DirX

Align cylinder to x-axis

DirY

Align cylinder to y-axis

DirZ

Align cylinder to z-axis

Part ID: Enter part ID

PList

Popup list ot select part

Create

Create the block

Accept the block

Done

Exit BlockM Interface

Figure 3 - BlockM Rotate

Rotate Pts. - Rotate points

NULL - No Constraint
X Axis - Constrain to x-axis
Y Axis - Constrain to y-axis
Z Axis - Constrain to z-axis
Screen X Axis - Constrain to screen x-axis
Screen Y Axis - Constrain to screen y-axis
Screen Z Axis - Constrain to screen z-axis

Position

Call Position Dialog to select base point

X: Enter x-coordinate of base point
Y: Enter y-coordinate of base point
Z: Enter z-coordinate of base point

Direction

Call Direction Dialog to specify rotation axis

X: Enter x-component of rotation axis
Y: Enter y-component of rotation axis
Z: Enter z-component of rotation axis

Rotation Angle: Enter rotation angle

Rotate+

Apply positive rotation to block

Rotate-

Apply negative rotation to block

Redo

Redo rotation

Undo

Undo rotation

Figure 4 - BlockM Delete

Delete - Delete blocks

Index Progression - Index progression

I Index List: I coordinates of blocks' list
J Index List: J coordinates of blocks' list
K Index List: K coordinates of blocks' list

a Region Definition - a Region Definition

Imin Jmin Kmin: I(min) J(min) K(min)
Imax Jmax Kmax: I(max) J(max) K(max)

Delete

Delete blocks or regions

Figure 5 - BlockM Project

Project - Project blocks

Point - Select point to project
Line - Select line to project
Surface - Select surface to project

Project

Project the block

Undo

Undo projection

Figure 6 - BlockM Move

Move Pts. - Move points

NULL - No constraint
X Axis - Constrain to x-axis
Y Axis - Constrain to y-axis
Z Axis - Constrain to z-axis
Screen X Axis - Constrain to screen x-axis
Screen Y Axis - Constrain to screen y-axis
Screen Z Axis - Constrain to screen z-axis
XY Plane - Constrain to xy plane
XZ Plane - Constrain to xz plane
YZ Plane - Constrain to yz plane
Screen Plane - Constrain to screen plane

Distance: Enter move distance

Trans-

Apply negative translation to block

Trans+

Apply positive translation to block

Redo

Redo translation

Undo

Undo translation