Obtaining the Gurney Energy Constant for a Two-Step Propulsion Model

Backofen, Joseph E.; Weickert, Chris

doi:10.1063/1.1483697

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…The above method only discusses the acceleration process of the fragment in the "detonation wave acceleration stage" and the "detonation wave product acceleration stage" [15], while the effect of the interaction between the layers on the fragments initial parameters is ignored [16]. Meanwhile, the difference in the fragments' initial parameters along the axis [17] and the applicability to the initial parameters of the double-layer prefabricated fragments [18][19][20][21] is not considered.…”

Section: Classic Models For Fragment Velocity and Dispersion Calculationmentioning

confidence: 99%

Study on Axial Dispersion Characteristics of Double-Layer Prefabricated Fragments

Guo

Wang

et al. 2023

Materials

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The axial distribution of initial velocity and direction angle of double-layer prefabricated fragments after an explosion were investigated via an explosion detonation test. A three-stage detonation driving model of double-layer prefabricated fragments was proposed. In the three-stage driving model, the acceleration process of double-layer prefabricated fragments is divided into three stages: “detonation wave acceleration stage”, “metal–medium interaction stage” and “detonation products acceleration stage”. The initial parameters of each layer of prefabricated fragments calculated by the three-stage detonation driving model of double-layer prefabricated fragments fit well with the test results. It was shown that the energy utilization rate of detonation products acting on the inner-layer and outer-layer fragments were 69% and 56%, respectively. The deceleration effect of sparse waves on the outer layer of fragments was weaker than that on the inner layer. The maximum initial velocity of fragments was located near the center of the warhead where the sparse waves intersected, located at around 0.66 times of the full length of warhead. This model can provide theoretical support and a design scheme for the initial parameter design of double-layer prefabricated fragment warheads.

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Section: Classic Models For Fragment Velocity and Dispersion Calculationmentioning

confidence: 99%

Study on Axial Dispersion Characteristics of Double-Layer Prefabricated Fragments

Guo

Wang

et al. 2023

Materials

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show abstract

“…Greater brisance is associated with higher detonation velocities, higher densities, larger heats of detonation and greater gas yield as characterised by c, the adiabatic coefficient for gas expansion. 3…”

Section: Applications For Energetic Materialsmentioning

confidence: 99%

Thinking big (and small) about energetic materials

Dlott¹

2006

Materials Science and Technology

117

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A significant recent development in the field of energetic materials has been the introduction of nanotechnology. Nanoparticle based materials have the potential of releasing more than twice as much energy as the best molecular explosives. The possibility of developing nanoenergetic materials that are optimised for specific applications by controlling the spatial organisation on length scales ranging from nanometres to metres is discussed. To do so a fundamental understanding of the relationships between structure and performance that does not yet exist is required. Experimental measurements using molecular spectroscopy with high time and space resolution are presented that help clarify the fundamental mechanisms of reaction between fuel nanoparticles and surrounding oxidisers, and the relationships between nanoenergetic structure and performance properties such as the energy release rate and the reaction propagation rate.

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Obtaining the Gurney Energy Constant for a Two-Step Propulsion Model

Cited by 2 publications

References 3 publications

Study on Axial Dispersion Characteristics of Double-Layer Prefabricated Fragments

Study on Axial Dispersion Characteristics of Double-Layer Prefabricated Fragments

Thinking big (and small) about energetic materials

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