Blast characterization of det-cord

J.B.W. Borgers, A. Pett, J. Vantomme, A.E.C. van der Stoel

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    Abstract

    Det-cord, short for detonating cord, is thin flexible plastic tube with a core of PETN, with a diameter of 5 mm and lengths of 30m per spool. It is commonly used to connect multiple charges, either in military or in civil (mining) operations, but this use has been extended to cutting trees, breaching operations and shock wave generation. Since the det-cord blast expands cylindrically, the commonly used blast parameter models based on spherical expansion do not apply, nevertheless these are used to get a rough estimate, due to a lack of better models. This paper will describe a 2D blast parameter model for det-cord, based on numerical simulations with AUTODYN and on a series of experimental measurements using pressure sensors. This model will work in a similar fashion as the Kingery-Bulmash model applied in CONWEP for spherically expanding blast waves. Furthermore several typical aspects will be discussed, including investigations examining the point of initiation, the effect of single or multiple strings and the accuracy of numerical simulations. Finally, the application of this model will be shown in two different cases.
    Original languageEnglish
    Title of host publicationProceedings of the 22nd International Symposium on Military Aspects of Blast and Shock (MABS22)
    Subtitle of host publicationNovember 4-9 2012, Bourges, France
    Place of PublicationBourges, France
    Pages1-17
    Publication statusPublished - 4 Nov 2012
    Event22nd International Symposium on Military Aspects of Blast and Shock, MABS 2012 - Bourges, France
    Duration: 4 Nov 20129 Nov 2012
    Conference number: 22

    Conference

    Conference22nd International Symposium on Military Aspects of Blast and Shock, MABS 2012
    Abbreviated titleMABS
    CountryFrance
    CityBourges
    Period4/11/129/11/12

    Keywords

    • Blast
    • Parameters
    • Simulation
    • Det-cord
    • AUTODYN

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  • Cite this

    Borgers, J. B. W., Pett, A., Vantomme, J., & van der Stoel, A. E. C. (2012). Blast characterization of det-cord. In Proceedings of the 22nd International Symposium on Military Aspects of Blast and Shock (MABS22): November 4-9 2012, Bourges, France (pp. 1-17). Bourges, France.