Mechanical contact by constraints and split-based preconditioning
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 Lab. (INL), Idaho Falls, ID (United States)
- Sponsoring Organization:
- DOE - NE
- DOE Contract Number:
- DE-AC07-05ID14517
- OSTI ID:
- 1134842
- Report Number(s):
- INL/EXT-14-31699
- Country of Publication:
- United States
- Language:
- English
Similar Records
Implement and Test 3D Mortar Contact in BISON
On the Degradation of the Effectiveness of Nonlinear Diffusion Acceleration with Parallel Block Jacobi Splitting
Bison Robustness and Performance Improvements
Technical Report
·
Thu Sep 01 00:00:00 EDT 2022
·
OSTI ID:1134842
On the Degradation of the Effectiveness of Nonlinear Diffusion Acceleration with Parallel Block Jacobi Splitting
Journal Article
·
Wed Jun 15 00:00:00 EDT 2016
· Transactions of the American Nuclear Society
·
OSTI ID:1134842
+4 more
Bison Robustness and Performance Improvements
Technical Report
·
Sun Jun 30 00:00:00 EDT 2019
·
OSTI ID:1134842
+2 more