Numerical computation of Pop plot

Menikoff, Ralph¹ 

[1] Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

关键词: Military Technology;    Weaponry;    & National Defense(45) Pop plot;    high explosives;    shock initiation;   

DOI  :  10.2172/1209280
RP-ID  :  LA-UR--15-22110
PID  :  OSTI ID: 1209280

美国|英语

来源: SciTech Connect

【 摘 要 】

The Pop plot ??? distance-of-run to detonation versus initial shock pressure ??? is a key characterization of shock initiation in a heterogeneous explosive. Reactive burn models for high explosives (HE) must reproduce the experimental Pop plot to have any chance of accurately predicting shock initiation phenomena. This report describes a methodology for automating the computation of a Pop plot for a specific explosive with a given HE model. Illustrative examples of the computation are shown for PBX 9502 with three burn models (SURF, WSD and Forest Fire) utilizing the xRage code, which is the Eulerian ASC hydrocode at LANL. Comparison of the numerical and experimental Pop plot can be the basis for a validation test or as an aid in calibrating the burn rate of an HE model. Issues with calibration are discussed.