Some aspects of the Multigrid Methods implementation to stress concentration problems are discussed. Convenient variational formulations for such problems are proposed. Computational aspects of Richardson's extrapolation methods implementation and nonlinear iterations are investigated. The efficiency of multigrid and some other widespread algorithms is compared.
Warning: The correct drawing of mathematical symbols depends on the Windows tuning parameter "list separator." You have to choose
Control Panel -> Regional Settings -> Numbers -> List separator
It must be set to ";" (semicolon)