Vertical impulse measurements of mines buried in saturated sand

Taylor, L.; Skaggs, R. R.; Gault, William A.

doi:10.1080/13855140500125557

Cited by 32 publications

(49 citation statements)

References 2 publications

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“…Having successfully validated these rate and moisture effects against experimental tests, the model was then used to investigate the impulsive loading resulting from shallow buried explosives in water-saturated sand [46]. These water-saturated sand models were representative of the large scale tests conducted by Taylor et al [47].…”

Section: Grujicic -Numerical Modelling In Autodynmentioning

confidence: 99%

“…The angle of the rotation of the pendulum can be related to its initial velocity, from which the impulse can be determined. 2.12.3 ARL (USA) -Vertical Pendulum The Army Research Laboratory (Aberdeen, USA) uses a vertical pendulum referred to as the vertical impulse measurement fixture (VIMF) to measure impulse from charges of up 8kg of TNT [47]. This pendulum can accommodate full scale explosive testing.…”

Section: Bisru (Rsa) -Vertical Pendulummentioning

confidence: 99%

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The response of quadrangular plates to buried charges

Pickering

Yuen

Nurick

et al. 2012

International Journal of Impact Engineering

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Section: Grujicic -Numerical Modelling In Autodynmentioning

confidence: 99%

Section: Bisru (Rsa) -Vertical Pendulummentioning

confidence: 99%

The response of quadrangular plates to buried charges

Pickering

Yuen

Nurick

et al. 2012

International Journal of Impact Engineering

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“…Edge-clamped scenarios provide a more representative case of the survivability of a structure under dynamic conditions, providing a measurement of structure deflection and failure mechanism [8,9]. Rear-face supported conditions allow for dynamic pressure and impulse measurements to be determined [10] . In the implementation of an armor technology, specific boundary conditions would need to be evaluated.…”

Section: A) B)mentioning

confidence: 99%

“…Critical to the study of a structure is the investigation of effects of the test parameters. The results of these tangential studies indicate that parameters such as soil type, moisture content [90], depth of burial, charge initiation methods, and explosive material [10] greatly affect the energy transfer from the explosive to the soil and soil to the structure.…”

mentioning

confidence: 99%

“…However, the boundary condition mechanisms create loading conditions that artificially damages the panel due the clamping loads, blast reflection of mounting plates, and material stretching in localized areas leading to premature failure. Impulse measurements have been taken from vertical pendulum rigs [10], horizontal pendulum rigs [85], and structures affixed to pressure measurement devices such as Kolsky Bars [37,86]. Critical to the study of a structure is the investigation of effects of the test parameters.…”

mentioning

confidence: 99%

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The Mechanical Response of a Hybrid Foam Glass-Epoxy Composite Corrugated Cellular Structure Sandwich Panel

Malcom

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The mechanical response of a novel hybrid glass-fiber composite corrugated cellular structure sandwich panel when subjected to out-of-plane compressive loading is investigated to evaluate the structure's potential adaptation into vehicle armor. Inspired by the persistent military need to develop effective, lightweight armor for vehicle protection against buried Improvised Explosive Devices (IEDs), this study provides a detailed analysis of the compressive response of the hybrid corrugated sandwich structure under quasi-static and dynamic loading.The through-thickness (out-of-plane) compressive strength, stiffness, densification strain, and energy absorption of the core is measured through quasi-static loading, along with peak failure strengths and impulse mitigation under dynamic compression and high explosive sand blast loading. The goal is to identify and characterize the quasi-static response of this novel hybrid composite corrugated sandwich panel core, core struts, and associated constitutive materials through empirical testing, develop quasi-static analytic predictions for the strength and modulus of the core and core struts, and finally, empirically investigate the dynamic strength and impulse mitigation performance along with the associated dynamic failure mechanisms. A vehicle armor must be able to provide through-structure pressure reduction and impulse mitigation.The hybrid composite corrugated sandwich panel concept is the first all-inclusive, singlestep infused composite sandwich panel ever to be manufactured. Constructed using a delamination resistant, three dimensionally (3D) woven fiber architecture, E-glass is used to construct a corrugated core with struts oriented at 60° (from the horizontal) and a stronger S2-glass is used for the facesheets. Divinycell H130 PVC foam is used to support the fiber structure in the corrugated pattern during infusion and provide a foam-strut stabilization to increase the compressive strength. A modified-Vacuum Assisted Resin Transfer Molding (VARTM) process was used in conjunction with a novel pressure differential technique created to construct core struts with fiber volume fraction ranging from 30-60% . Compressive strut failure was observed to be governed by Euler buckling at low strut slenderness ratios (t/l ≤ 0.07) and completely transitioned to plastic microbuckling at higher ratios (t/l ≥ 0.14). For low fiber volume fraction struts, υ f ≈ 35%, strengths ranged from 85-125 MPa while for high fiber fraction struts, υ f ≈ 56%, strengths ranged from 100-275 MPa. The elastic modulus relation was approximately linear to iii the fiber volume fraction ranging from 12-25 GPa. Negligible differences in the strength and modulus of the E-glass and S2-glass composite struts under compressive loading were observed, revealing a significant factor in material choice for glass based composites used in compressive design. Struts failing by plastic microbuckling were hypothesized to be largely influenced by the matrix shear strength and the initial average fiber tow ...

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Dynamic Analysis of a Plate Loaded by Explosively Driven Sand

Resnyansky

Weckert

2014

Dynamic Behavior of Materials, Volume 1

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Vertical impulse measurements of mines buried in saturated sand

Cited by 32 publications

References 2 publications

The response of quadrangular plates to buried charges

The response of quadrangular plates to buried charges

The Mechanical Response of a Hybrid Foam Glass-Epoxy Composite Corrugated Cellular Structure Sandwich Panel

Dynamic Analysis of a Plate Loaded by Explosively Driven Sand

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