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Sensitivity analysis with the coarsening parameters.

Sensitivity analysis with the coarsening parameters.

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Table 2 : Default input parameters for aSP-AMG.
Table 3 : aSP-AMG results considering the input parameters from Table 2.
Figure 4: Sparsity pattern plots of the test matrices tripod3239k,...
Table 4 : Sensitivity analysis with the coarsening parameters.
+3 Figure 5: Distribution of the relative total time of different runs...
A robust adaptive algebraic multigrid linear solver for structural mechanics
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  • Feb 2019
The numerical simulation of structural mechanics applications via finite elements usually requires the solution of large-size and ill-conditioned linear systems, especially when accurate results are sought for derived variables interpolated with lower order functions, like stress or deformation fields. Such task represents the most time-consuming k...
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... In Table 4, we show the sensitivity analysis of aSP-AMG with respect to its coarsening calculation phase. We want to test the per- formance of the method varying the average number of strong connections per node θ from a lower bound equal to 2 up to an upper bound equal to 10. ...

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