Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Comparison of software codes and discretization schemes for mesoscale simulation of dynamic mechanical loading of PBX

 
: Sauer, Martin; Durr, Nathanaël; Lück, Martin; Nixon, Michael E.; Koundinyan, Sushilkumar; Diggs, Angela; Schmidt, Martin; Koch, Michael

Fraunhofer-Institut für Chemische Technologie -ICT-, Pfinztal:
Energetic materials. Past, present and future : 50th International Annual Conference of the Fraunhofer ICT, June 25-28, 2019, Convention Center, Karlsruhe, Germany
Pfinztal: Fraunhofer ICT, 2019
12 S.
Fraunhofer-Institut für Chemische Technologie (International Annual Conference) <50, 2019, Karlsruhe>
Englisch
Konferenzbeitrag
Fraunhofer EMI ()

Abstract
The ability to accurately predict temperature during simulations of dynamic mechanical loading of explosives is essential as the chemistry driving the initiation process is highly dependent on local temperature. The current major chemical reaction models are all functions of temperature. Yet, temperature is the least understood and most volatile variable in many simulations. Accurate temperature measurements are extremely difficult in the detonation regime, making modeling predictions difficult or impossible to validate. In order to increase the level of confidence in simulations, an alternative approach is to compare results from a number of different software codes simulating the same baseline geometry and boundary conditions. Four codes are used in this study: EPIC, SCIMITAR3D, SOPHIA and ANSYS AUTODYN. While Lagrangian approaches are used in EPIC, SOPHIA and ANSYS AUTODYN, SCIMITAR3D is based on an Eulerian discretization, which is enhanced with a level set formulation.

: http://publica.fraunhofer.de/dokumente/N-572614.html