Enabling R&D for accurate simulation of non-ideal explosives.

Technical Report · Wed Sep 01 04:00:00 EDT 2010

DOI:https://doi.org/10.2172/1008115· OSTI ID:1008115

Aidun, John Bahram; Thompson, Aidan Patrick; Schmitt, Robert Gerard

We implemented two numerical simulation capabilities essential to reliably predicting the effect of non-ideal explosives (NXs). To begin to be able to treat the multiple, competing, multi-step reaction paths and slower kinetics of NXs, Sandia's CTH shock physics code was extended to include the TIGER thermochemical equilibrium solver as an in-line routine. To facilitate efficient exploration of reaction pathways that need to be identified for the CTH simulations, we implemented in Sandia's LAMMPS molecular dynamics code the MSST method, which is a reactive molecular dynamics technique for simulating steady shock wave response. Our preliminary demonstrations of these two capabilities serve several purposes: (i) they demonstrate proof-of-principle for our approach; (ii) they provide illustration of the applicability of the new functionality; and (iii) they begin to characterize the use of the new functionality and identify where improvements will be needed for the ultimate capability to meet national security needs. Next steps are discussed.

• Research Organization: Sandia National Laboratories
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 1008115
• Report Number(s): SAND2010-6831
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
99 GENERAL AND MISCELLANEOUS
EXPLORATION
EXPLOSIVES
KINETICS
MOLECULAR DYNAMICS METHOD
NATIONAL SECURITY
SHOCK WAVES
SIMULATION