Testing and Simulation of a Cased Charge in a Confined Blast

摘要

This paper discusses a study using several analysis tools to make pre-test predictions of blast loads from an internal explosion test of a cased charge. The objective of the calculations was to generate best estimates of the blast loads, and because of the uncertainties associates with the different analytic tools, account for these uncertainties when analyzing or designing for the structure's response. The codes used included two fast-running models (FRM's) and two high-fidelity physics-based (HFPB) computational fluid dynamic (CFD) codes. The predictions from the simulations are compared to data from an actual blast test that was performed in a test structure that was designed to resist the loads while incurring only low levels of damage. The results of these comparisons are presented and the accuracy of the analysis tools is discussed.