Equivalency is often used to enable calculations of overpressures and impulses for explosives other than TNT. Equivalent mass factors are available for far-field detonations but none are available for near-field detonations. These reported factors are associated with incident overpressure and impulse and assumed appropriate for reflected overpressure and impulse. Numerical studies of TNT-equivalent mass factors for four high explosives (PETN, Composition B, Pentolite and Tetryl) for incident and normally reflected peak overpressure and scaled impulse are presented for a wide range of scaled distance 0.06 ≤ Z ≤ 40 m/kg1/3. Emphasis is placed on near-field detonations for which no reliable factors are currently available.
ASCE.2011. Blast Protection of Buildings, ASCE/SEI Standard 59–11. American Society of Civil Engineers, Reston, VA.
4.
BakerW. E.1973, Explosions in Air, University of Texas Press, Austin, TX.
5.
CourantR.FriedrichsK. O.1948. Supersonic Flow and Shock Waves. Interscience Publishers, New York, NY.
6.
Department of the Army (DoA). 1986. Fundamentals of Protective Design for Conventional Weapons (TM 5–855–1). Washington, DC.
7.
DobratzB. M.CrawfordP. C.1985. “LLNL Explosive Handbook, Properties of chemical explosives and explosive simulants.”Report UCRL-52997, Lawrence Livermore National Laboratory, Livermore, CA.
8.
Department of Defense (DoD). 2008. Unified Facilities Criteria (UFC): Structures to Resist the Effects of Accidental Explosions (UFC 3–340–02). Departments of the Army, the Navy, and the Air Force, Washington, DC.
9.
DusenberryD. O., Ed. 2010. Handbook for Blast Resistant Design of Buildings. John Wiley & Sons, Inc., Hoboken, NJ.
10.
EdriI.FeldgunV. R.KarinskiY. S.YankelevskyD. Z.2013. “Afterburning aspects in an internal TNT explosion.”International Journal of Protective Structures, Vol. 4., No. 1., pp. 97–116.
11.
EsparzaE. D.1986. “Blast measurements and equivalency for spherical charges at small scaled distances.”International Journal of Impact Engineering, Vol. 4, No. 1., pp. 23–40.
12.
FickettW.DavisW. C.1979. Detonation: Theory and Experiment. Dover Publications Inc., Mineola, N Y.
13.
FormbyS. A.WhartonR. K.. 1996. “Blast characteristics and TNT equivalence values for some commercial explosives detonated at ground level.”Journal of Hazardous Materials, Vol. 50, pp. 183–198.
14.
GoodmanH. J.1960. “Complied free-air blast data on bare spherical Pentolite.”BRL Report No. 1092, US Army Ballistic Research Laboratory, Aberdeen Proving Ground, MD.
15.
HaoH.StewartM.LiZ.-X.ShiY.2010. “RC column failure probabilities to blast loads.”International Journal of Protective Structures, Vol. 1., No. 4., pp. 571–591.
16.
KingeryC. N.BulmashG.1984. “Airblast parameters from TNT spherical air burst and hemispherical surface burst.”Report ARBRL-TR-02555, US Army Ballistic Research Laboratory, Aberdeen Proving Ground, MD.
17.
KrauthammerT.2008. Modern Protective Structures. CRC Press, Boca Raton, FL.
18.
McNesbyK. L.HomanB. E.RitterJ. J.QuineZ.EhlersR. Z.McAndrewB. A.2010. “Afterburn ignition delay and shock augmentation in fuel rich solid explosives.”Propellants, Explosives, Pyrotechnics, Vol. 35, No. 1, pp. 57–65.
19.
NeedhamC. E.2010. Blast Waves, Springer, NY.
20.
ShinJ.WhittakerA. S.ArefA. J.CormieD.2014a. “Air blast effects on civil structures.”Technical Report MCEER-14–0006, University at Buffalo, Buffalo, N Y, December.
21.
ShinJ.WhittakerA. S.CormieD.WilkinsonW.2014b. “Numerical modeling of close-in detonations of high explosives.”Engineering Structures, Vol. 81, pp. 88–97.
22.
ShinJ.WhittakerA. S.CormieD.2015. “Incident and normally reflected peak overpressure and impulse for detonations of spherical high explosives in free air.”Journal of Structural Engineering, Published on-line, http://dx.doi.org/10.1061/(ASCE)ST.1943#-541X.0001305.
23.
SmithP. D.HetheringtonJ. G.1994. Blast and Ballistic Loading of Structures. Butterworth-Heinemann, Oxford; Boston.
24.
WhartonR. KFormbyS. A.MerrifieldR.2000. “Airblast TNT equivalence for a range of commercial blasting explosives.”Journal of Hazardous Materials, Vol. 79, pp. 31–39.
25.
WuC.FattoriG.WhittakerA. S.OehlersD. J.2010. “Investigation of air-blast effects from spherical- and cylindrical-shaped charges.”International Journal of Protective Structures, Vol. 1., No. 3., pp. 345–362.
