[en] In this work, we demonstrate the feasibility of fully-Lagrangian finite element simulations of the mechanics of three-dimensional penetration environments. The key enabling component is a robust library informed with state-of-the-art algorithms for mesh healing and optimization, which is repeatedly used during the simulations to eliminate deformation-induced mesh distortion and to maintain the quality of the numerical solution. The computational strategy effectively avoids the need to resort to artifacts such as element deletion or conversion to meshless particles which have been proposed to eliminate the issue of mesh distortion. The effectiveness of the computational strategy is demonstrated in a simulation of deep oblique penetration of a spherical-nosed steel rod on an aluminum target.
Disciplines :
Mechanical engineering
Author, co-author :
Mauch, Sean; California Institut of Technology - CALTECH
Noels, Ludovic ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS - Milieux continus et thermomécanique
Zhao, Zizu; Massachusetts Institute of Technology - MIT > Aeronautics & Astronautics
Radovitzky, Raúl; Massachusetts Institute of Technology - MIT > Aeronautics & Astronautics
Language :
English
Title :
Lagrangian simulations of penetration environments via mesh healing and adaptative optimisation
F.R.S.-FNRS - Fonds de la Recherche Scientifique This research was partially supported by the U.S. Army through the Institute for Soldier Nanotechnologies, under Contract DAAD-19-02-D-0002 with the U.S. Army Research Office