Fig. 11From: Application of an iterative Golub-Kahan algorithm to structural mechanics problems with multi-point constraintsGKB convergence for the containement building problem. Since MUMPS backward error estimate is \(1.17^{-05}\), we used the LU decomposition as preconditionner for a FGMRES solver with a precision of \(1^{-15}\) to compute the reference solutionBack to article page