erosion¶

Module: core

Category: meshadaptor

Type string: "erosion"

Parameters¶

Name	Description	Default	Range
`max_iters`	max_iters	-1	\(\in \mathbb{Z}\)
`max_elems`	max_elems	0	\(\in \mathbb{Z}\)
`sort`	sort	0	\(\in \mathbb{Z}\)
`remove_islands`	remove_islands	false	\(\{0, 1\}\)
`erode_surfaces`	erode_surfaces	1	\([0, 3]\)
`criterion`	criterion		N/A

Description¶

The erosion adaptor can be used to deactivate elements in a mesh, based on a user-defined criterion.

The erode_surfaces parameter sets the policy of handling surface facets that attach to eroded elements. The value can be set to one of the following values:

no: don't erode surfaces (default)
yes: erode surfaces if the underlying element is eroded.
grow: add the newly exposed facets of eroded elements to the surface.
reconstruct: reconstruct surface. This only works if the surface is defined via a part.

Example: In this example, elements that have an (integration point averaged) effective stress larger than 0.3, are eroded. Only three elements are eroded per adaptation cycle.

<mesh_adaptor type="erosion"> 
  <max_iters>1</max_iters>
  <max_elems>3</max_elems>
  <sort>1</sort>
  <criterion type="min-max filter">
    <min>0.3</min>
    <clamp>0</clamp>
    <data type="stress"/>
  </criterion>
</mesh_adaptor>