Matrix-Free Multigrid for Phase-Field Fracture Problems

DI Daniel Jodlbauer

Jan. 8, 2019, 3:30 p.m. S2 054

In this talk, we will present matrix-free solution methods to
phase-field fracture problems. Matrix-free methods can be particularly
useful in this context: it avoids reassembling the Jacobian every time
the linearization point, active-set or mesh changes. The active-set
method is required for the treatment of the variational inequality,
resulting from the crack irreversibility condition. Furthermore, we will
show some preliminary numerical results and discuss some of the
challenges that have not yet been fully resolved.