Mechanical contact by constraints and split-based preconditioning
- Univ. of Chicago, IL (United States)
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
An accurate implementation of glued mechanical contact was developed in MOOSE based on its Constraint system. This approach results in a superior convergence of elastic structure problems, in particular in BISON. Adaptation of this technique to frictionless and frictional contact models is under way. Additionally, the improved convergence of elastic problems results from the application of the split-based preconditioners to constraint-based systems. This yields a substantial increase in the robustness of elastic solvers when the number of nodes in contact is increased and/or the mesh is refined.
- Research Organization:
- Idaho National Laboratory (INL); Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- Sponsoring Organization:
- USDOE Office of Nuclear Energy (NE)
- DOE Contract Number:
- AC07-05ID14517
- OSTI ID:
- 1134842
- Report Number(s):
- INL/EXT--14-31699
- Country of Publication:
- United States
- Language:
- English
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