A Nonlinear FETI-DP Method with an Inexact Coarse Problem

摘要

The new nonlinear FETI-DP method combines the approaches from and thus can be denoted inexact reduced Nonlinear-FETI-DP-1 (irNL1). An important building block of this method is the solution of nonlinear problems on the subdo-mains. Algorithmically, the same building blocks as standard FETI-DP methods are used. If exact solvers are used as building blocks the new method shows the same performance as the Nonlinear-FETI-DP-1 method. If an efficient preconditioner is used for the coarse problem then the scalability can be extended substantially.