  Impact simulations for damage resistance analysis are computationally
intensive due to contact algorithms and advanced damage models. Both methods,
which are the main ingredients in an impact event, require refined meshes at
the contact zone to obtain accurate predictions of the contact force and damage
onset and propagation through the material. This work presents the application
of the partial Dirichlet-Neumann contact algorithm to simulate low-velocity
impact problems on composite structures using High-Performance Computing. This
algorithm is devised for parallel finite element codes running on
supercomputers, and it is extended to explicit time integration schemes to
solve impact problems including damage. The proposed framework is validated
with a standard test for damage resistance on fiber-reinforced polymer matrix
composites. Moreover, the parallel performance of the proposed algorithm has
been evaluated in a mesh of 74M of elements running with 2400 processors.
