Main Help → All Commands → MPM Grid and Material Points
These commands are used to define the background MPM grid:
If a simulation works better with unequal grid element sizes, you can use these commands to create a Tartan grid:
Once the grid is done, material points are added using a series of Region, Hole, or BMPRegion commands. The Region
or Hole
block use subordinate shape commands to fill regions with material point (or omit regions for holes). The BMPRegion
blocks create material points based on an image.
Within a Region or Hole block, the geometry for the material points or the hole are defined by any number of shape commands.
When a custom task works by injecting particles into a simulation (e.g., the FluidSource Custom Task), you will need to fill the reservoir at the start of the simulation.