CTH simulation of PBX-9501 Taylor tests /

Koby, Joseph R.

关键词: DEFORMATION;    EXPLOSIVES;    GEOMETRY;    HYDRODYNAMICS;    IGNITION;    IMPACT TESTS;    LANL;    PLASTICS;    SIMULATION;    VELOCITY;   

DOI  :  10.2172/1035496
RP-ID  :  LA-14444
PID  :  OSTI ID: 1035496
Others  :  TRN: US201205%%406

学科分类：材料科学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

During March-May 2011, multiple Taylor impact tests were conducted at LANL, examining the behavior of PBXN-9 and PBX-9501 under rapid loading. Subsequently, a computational hydrodynamics code (CTH) model was developed to mimic the deformation behavior observed in these impact tests with PBX-9501 would likely initiate upon impact. Also examined was whether an inert slud behind the explosive would lead to initiation at lower, more easily attainable velocities. The simplified model used here showed a minimum velocity for ignition of 530 m/s which was unchanged by the addition of a plastic slud behind the sample. The use of a lead slug did lower the minimum velocity to 460 m/s. These values are likely more qualitative at this point because multiple simplifications are currently used in the materials properties and test geometry. The results do show that this approach is capable of determining ignition due to Taylor impact.