Large-scale 3D modeling of projectile impact damage in brittle plates

Abstract

a b s t r a c tThe damage and failure of brittle plates subjected to projectile impact is investigated through large-scale three-dimensional simulation using the DG/CZM approach introduced by Radovitzky et al. [Comput. Methods Appl. Mech. Eng. 2011; 200(1-4), 326-344]. Two standard experimental setups are considered: first, we simulate edge-on impact experiments on Al 2 O 3 tiles by Strassburger and Senf [Technical Report ARL-CR-214, Army Research Laboratory, 1995]. Qualitative and quantitative validation of the simulation results is pursued by direct comparison of simulations with experiments at different loading rates and good agreement is obtained. In the second example considered, we investigate the fracture patterns in normal impact of spheres on thin, unconfined ceramic plates over a wide range of loading rates. For both the edge-on and normal impact configurations, the full field description provided by the simulations is used to interpret the mechanisms underlying the crack propagation patterns and their strong dependence on loading rate.

A fully-coupled computational framework for large-scale simulation of fluid-driven fracture propagation on parallel computers

“…The numerical formulation for the coupled problem ( 1)-( 2)-( 4) consists of several ingredients and includes the spatial discretization of the solid mechanics and of the fluid flow. The main characteristic of the solid spatial discretization is that we generalize the DG/CZM framework proposed in [26,36] for the dynamic propagation of dry cracks to the case of quasi-static propagation of fluid-filled cracks. The DG/CZM method is based on the combination of a discontinuous Galerkin formulation of the continuum problem and a cohesive zone model of fracture.…”

“…Here we propose a number of modifications to that approach, allowing for unspecified fracture path and enabling high resolution simulations in 3D. To this end, we adopt the Discontinuous Galerkin / Cohesive Zone Model (DG/CZM) framework originally proposed in [26,36] for the massively parallel simulation of dynamic fracture and fragmentation of brittle solids. In that approach, the flux and stabilization terms arising at interelement boundaries from the DG formulation prior to fracture are enforced via interface elements.…”

Wave interactions and fracture evolution in a thin glass plate under impact: a combined experimental and peridynamic analysis

“…For the normal impact, the authors of [7] mostly discuss the damage patterns and the dependence of these patterns on the impact velocity, similar to what is done in [8] and [9] for glass. Some discussion on the possible reasons behind the growth of the various types of cracks is presented in [7], but the actual mechanisms/scenarios behind such phenomena are not identified.…”

Numerical study of the influence of gaps between tiles and backing type on overall high-velocity impact performance of a ceramic-faced protective structure

“…These works became the basis for all further studies in this area. Since then, the impact loading of high-strength fabrics and composites [6][7][8][9][10][11][12][13], ceramics [14][15][16][17][18][19][20], as well as their combinations [21][22][23][24][25][26][27][28][29], has been widely studied using both experimental and numerical approaches.…”