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grinsfem / grins

Multiphysics Finite Element package built on libMesh
http://grinsfem.github.io
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Solid solver method #601

Open ehsanakrami opened 3 years ago

ehsanakrami commented 3 years ago

Hi, I wonder if GRINS can solve the structural problem (Elastic large deformation or hyper-elastic) with the Updated Lagrangian (current configuration) method. I want to develop my FSI solver and nee a UL structural solver for considering mesh deformations.

pbauman commented 3 years ago

Hi @ehsanakrami thanks for your interest. At this time, the hyper-elasticity Physics are currently implemented for "Total Lagrangian" formulations, i.e. displacement always with respect to the reference configuration. Depending on what you want to do exactly, it wouldn't be terribly difficult to follow the existing functionality to get a start, but you would need to add the additional parts of updating the mesh positions to the current configuration or manually storing the current node positions yourself. It may not be trivial unless you're quite familiar with libMesh already.