On 05/13/2017 01:08 AM, Amir Pasha wrote:
Dear all

I want to implement a total remeshing technique when large deformations are
involved. I am using the updated Lagrangian method so that the integration is
performed at current configuration (mesh is moved to current configuration) to
simulate a material damage process. Due to material damage, deformation is
localized in a narrow band and mesh is distorted in the damaged area. What are
the general step for implementation total remeshing?

1) Create a new mesh based on the current configuration using an external
library such as gmesh
2) Move the old mesh to the initial configuration
3) Transfer data to the new mesh

Yes, these are the steps. None of them are entirely trivial, though for the last step you can at least use the FEFieldFunction class if you store both the old and the new mesh.

You may also want to think about using a mesh improvement library instead of completely remeshing. Take a look at the Mesquite library that's part of Trilinos, for example.

Best
 W.

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Wolfgang Bangerth          email:                 bange...@colostate.edu
                           www: http://www.math.colostate.edu/~bangerth/

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