000013761 001__ 13761
000013761 005__ 20161114170254.0
000013761 04107 $$aeng
000013761 046__ $$k2011-05-25
000013761 100__ $$aBaker, E.
000013761 24500 $$aOn the Calibration of High Explosive Thermodynamic Equations of State for Broad Application

000013761 24630 $$n3.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013761 260__ $$bNational Technical University of Athens, 2011
000013761 506__ $$arestricted
000013761 520__ $$2eng$$aThere is an increasing emphasis on the modeling of security related blast events that produce both fragmentation and blast loading. The Jones-Wilkins-Lee-Baker (JWLB) thermodynamic equation of state was originally developed to more accurately describe overdriven detonation, while maintaining an accurate description of high explosive products early expansion work output associated with metal pushing and fragmentation. The equation of state is more mathematically complex than the Jones-Wilkins-Lee equation of state, as it includes an increased number of parameters to describe the principle isentrope, as well as a Gruneisen parameter formulation that is a function of specific volume. Although the increased mathematical complexity over JWL was originally implemented in order to model both overdriven detonation and early volume expansion work output, it has been found that this increased mathematical complexity also allows the flexibility to parameterize higher volume work output associated with blast output. As increased numbers of parameters can mean increased calibration complexity and does not guarantee increased accuracy for practical problems of interest, calibration techniques have been developed to provide robust detonation products equation of state parameters that are applicable to the broad range of high explosive work output associated with overdriven detonation (wave shapers), early volume expansion (metal pushing) and late volume expansion (blast). This paper presents a method of parameter calibration: formal optimization using JAGUAR thermo-chemical predictions to cylinder test and high volume total work output associated with blast overpressure and impulse. The calibration procedure details are presented, along with equation of state parameter sets and ALE3D modeling comparisons. Although reasonable agreement to empirically based peak overpressures is achieved, the results indicate that an explosive products afterburning model is required to achieve further agreement with empirically based peak overpressures and impulse.

000013761 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013761 653__ $$aExplosives, Blast, Equation of State, Detonation, Security.

000013761 7112_ $$aCOMPDYN 2011 - 3rd International Thematic Conference$$cIsland of Corfu (GR)$$d2011-05-25 / 2011-05-28$$gCOMPDYN2011
000013761 720__ $$aBaker, E.$$iStunzenas, G.$$iStiel, L.$$iMurphy, D.
000013761 8560_ $$ffischerc@itam.cas.cz
000013761 8564_ $$s281552$$uhttps://invenio.itam.cas.cz/record/13761/files/637.pdf$$yOriginal version of the author's contribution as presented on CD, section: MS 02 Advances in Computational Mechanics for Security Applications.
000013761 962__ $$r13401
000013761 980__ $$aPAPER