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XFEM Paraview Plugin

Description

MooseXfemClip is a filter for use visualizing results produced by the extended finite element method (XFEM) using the xfem module in the MOOSE framework.

The MOOSE XFEM implementation uses the phantom node technique, in which elements traversed by a discontinuity are split into two partial elements, each containing physical and non-physical material.

This code generates two sets of elemental variables: xfem_cut_origin_[0-2] and xfem_cut_normal_[0-2], which define the origin and normal of a cutting plane to be applied to each partial element. If these both contain nonzero values, this filter will cut off the non-physical portions of those elements.

It is necessary to define the cut planes in this way rather than using a global signed distance function because a global signed distance function has ambiguities at crack tips, where two partial elements share a common edge or face.

Usage Instructions

To use the module, load in all variables coming from an XFEM results file. The ones the plugin needs are called: xfem_cut_origin_[xyz] and xfem_cut_normal_[xyz]. These are generated automatically by MOOSE models using XFEM. Once you’ve done that, you can apply the MooseXfemClip filter, and you should see the nonphysical parts of partial elements clipped.

Acknowledgements

This filter is based on the vtkClipDataSet filter, copyright Ken Martin, Will Schroeder, and Bill Lorensen.

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License

Copyright 2017 Battelle Energy Alliance, LLC All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of the nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BATTELLE ENERGY ALLIANCE, LLC BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Author contact information

  1. Benjamin Spencer benjamin.spencer@inl.gov Idaho National Laboratory P.O. Box 1625, MS 3840 Idaho Falls, ID 83415