A time and space mortar method for coupling linear modal subdomains and non-linear subdomains in explicit structural dynamics

This paper deals with an extension of dynamic subdomain methods. It relies on time multi-scale algorithms, in the particular case of explicit dynamics. It introduces new opportunities in terms of proper modeling on each subdomain adapted to its effective loading in order to reduce the calculation time of the simulations. Treatment of non-matching meshes and local modal projection methods are thus especially discussed. The efficiency of the method is then illustrated with two large-scale examples.