Particle BC Shape Commands

The method to create particle-based boundary conditions was changed in NairnMPM (April 2017) and OSParticulas (revision 1170) to the method using ParticleBC and <BCShape> blocks. As a result, all boundary conditions commands listed below are deprecated. They still work, but should be replaced by new methods as described below.

Line (2D or Axisymmetric)

The command to select a line through a 2D mesh in scripted files is:

LoadLine (x1),(y1),(x2),(y2),<(tolerance)>
  (one or more load, traction, heat flux, or concentration flux condition)
    ...
EndLoadLine

In XML files, a line is selected with:

<BCLine units='(units)' x1='(x1)' y1='(y1)' x2='(x2)' y2='(y2)' tolerance='(tolerance)'>
  (one or more load, traction, heat flux, or concentration flux condition)
    ...
</BCLine>

Arc (2D or Axisymmetric)

The command to select an arc through a 2D mesh in scripted files is:

LoadArc (x1),(y1),(x2),(y2),(startAng),(endAng),<(tolerance)>
  (one or more load, traction, heat flux, or concentration flux condition)
    ...
EndLoadArc

In XML files, a line is selected with:

<BCArc units='(units)' x1='(x1)' y1='(y1)' x2='(x2)' y2='(y2)'
       start='(startAng)' end='(endAng)' tolerance='(tolerance)'>
  (one or more load, traction, heat flux, or concentration flux condition)
    ...
</BCLine>

Rectangle (2D or Axisymmetric)

The command to select rectangle in a 2D mesh in scripted files is:

LoadRect (xmin),(xmax),(ymin),(ymax)
  (one or more load, traction, heat flux, or concentration flux condition)
    ...
EndLoadRect

In XML files, a rectangle is selected with:

<LdRect xmin='(xmin)' xmax='(xmax)' ymin='(ymin)' ymax='(ymax)'>
  (one or more load, traction, heat flux, or concentration flux condition)
    ...
</LdRect>

Box or Cylinder (3D)

The command to select a 3D box or cylinder in scripted files is:

LoadBox (x1),(y1),(z1),(x2),(y2),(z2),<(axis)>
  (one or more load, traction, heat flux, or concentration flux condition)
    ...
EndLoadBox

In XML files, a box is selected with:

<BCBox units='(units)' xmin='(x1)' xmax='(x2)' ymin='(y1)' ymax='(y2)'
                       zmin='(z1)' zmax='(z2)' axis='(axis)'>
  (one or more load, traction, heat flux, or concentration flux condition)
    ...
</BCBox>