A comparison of ballistic limit with adaptive-mesh Eulerian hydrocode predictions of one- and two-plate aluminum shielding protection against millimeter-sized Fe-Ni space debris

Hypervelocity collisions with space debris (SD, natural meteoroids and man-made artifacts) can significantly affect the performance of spacecraft. Here. I compare (1) the predictions of the Cour-Palais/ Christiansen (C-P/C) ballistic limit equations (BLEB) spacecraft shield models with (2) the predictions of the response of those shields generated by an adaptive-mesh Eulerian hydrodynamic code, incorporating Mie-Gruneisen solid mechanics and a simple material-failure model, running on a modern PC, for hypervelocity collisions with millimeter-sized iron-nickel (Fe-Ni) spheres. The results show that the shield thicknesses predicted by the C-P/C BLEB are consistent with the adequacy of the shield response predicted by the hydrodynamic modeling. Although several hydrocodes have been used to validate the C-P/C BLEB, validating them with an (inherently computing resource-efficient) adaptive-mesh Eulerian hydrodynamic code for this impact regime appears to be novel. (C) 2008 Elsevier Ltd. All rights reserved.