Development of multi-component explosive lenses for arbitrary phase velocity generation

Loiseau, Jason; Huneault, Justin; Petel, Oren E.; Goroshin, Samuel; Frost, David L.; Higgins, Andrew; Zhang, F

doi:10.1088/1742-6596/500/19/192010

Cited by 3 publications

(1 citation statement)

References 1 publication

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“…where C ≈ Constraining the flame or shock wave propagation with the use of structural boundaries such as the blasting cap, container housing or shaped walls will increase the energy translation to the next element [1,122]. Called an explosive lens, this is beneficial for constraining the shock wave towards a desired direction and creating a shaped or flat detonation wave for equal impact of the next element in the explosive train [123].…”

Section: Optimising Outputmentioning

confidence: 99%

Towards Safer Primers: A Review

Lundgaard

Cahill

et al. 2019

Technologies

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Primers are used to reliably initiate a secondary explosive in a wide range of industrial and defence applications. However, established primer technologies pose both direct and indirect risks to health and safety. This review analyses a new generation of primer materials and ignition control mechanisms that have been developed to address these risks in firearms. Electrically or optically initiated metal, oxide and semiconductor-based devices show promise as alternatives for heavy metal percussive primers. The prospects for wider use of low-cost, safe, reliable and non-toxic primers are discussed in view of these developments.

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Section: Optimising Outputmentioning

confidence: 99%

Towards Safer Primers: A Review

Lundgaard

Cahill

et al. 2019

Technologies

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An explosively driven launcher capable of $$10\,\mathrm{km\,s}^{-1}$$ projectile velocities

et al. 2022

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Reacting condensed phase explosives in direct contact

Demattè

Michael

Nikiforakis

2022

Journal of Applied Physics

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In this article, we present a new formulation and an associated algorithm for the simultaneous numerical simulation of multiple condensed phase explosives in direct contact with each other, which may also be confined by (or interacting with one or more) compliant inert materials. Examples include composite rate-stick (i.e., involving two explosives in contact) problems, interaction of shock waves with chemically active particles in condensed-phase explosives, and devices such as detonators and boosters. There are several formulations that address the compliant or structural response of confiners and particles due to detonations, but the direct interaction of explosives remains a challenge for most formulations and algorithms. The proposed formulation addresses this problem by extending the conservation laws and mixture rules of an existing hybrid formulation (suitable for solving problems involving the coexistence of reactants and products in an explosive mixture and its immiscible interaction with inert materials) to model the interaction of multiple explosive mixtures. An algorithm for the solution of the resulting system of partial differential equations is presented, which includes a new robust method for the retrieval of the densities of the constituents of each explosive mixture. This is achieved by means of a multi-dimensional root-finding algorithm, which employs physical as well as mathematical considerations in order to converge to the correct solution. The algorithm is implemented in a hierarchical adaptive mesh refinement framework and validated against results from problems with known solutions. Additional case studies demonstrate that the method can simulate the interaction of detonation waves produced by military grade and commercial explosives in direct contact, each with its own distinct equation of state and reaction rate law.

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Development of multi-component explosive lenses for arbitrary phase velocity generation

Cited by 3 publications

References 1 publication

Towards Safer Primers: A Review

Towards Safer Primers: A Review

An explosively driven launcher capable of $$10\,\mathrm{km\,s}^{-1}$$ projectile velocities

Reacting condensed phase explosives in direct contact

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