Impulse transfer during granular matter impact with inclined sliding surfaces

Kyner, Anne; Deshpande, V.S.; Wadley, H.N.G.

doi:10.1016/j.ijimpeng.2019.04.003

Cited by 2 publications

(2 citation statements)

References 26 publications

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“…As the typically intensive impulsive load can cause large deformation and severe damage to a vehicle, how to design its main structure (in particular, the underbody) [5] against such blast loading attracts much attention [5][6][7]. For instance, to reduce the transmitted impulse, vehicles like South African Cassipir, Cougar H, and International MaxxPro all adopted V-shaped hulls, in condition that the total vehicle weight remains unchanged [8][9][10]. To further reduce the impulse transmission, new concepts such as attaching a sliding plate or a side-ventchannel to the V-shaped plate were proposed [10,11].…”

Section: Introductionmentioning

confidence: 99%

“…For instance, to reduce the transmitted impulse, vehicles like South African Cassipir, Cougar H, and International MaxxPro all adopted V-shaped hulls, in condition that the total vehicle weight remains unchanged [8][9][10]. To further reduce the impulse transmission, new concepts such as attaching a sliding plate or a side-ventchannel to the V-shaped plate were proposed [10,11]. However, at present, most existing civil/military vehicles have flat floors, accompanied by relatively low gravitational centers, and hence the V-shaped hull design is not appropriate.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic response of ultralight all-metallic sandwich panel with 3D tube cellular core to shallow-buried explosives

Zhang

Zhao

et al. 2021

Sci. China Technol. Sci.

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The underbody of a vehicle system, either military or civil, is typically made of a relatively thin metallic plate, thus vulnerable to mine blast attacks. To improve the blast resistance, a multitude of protective structures have been proposed as attachments to the thin plate. In the present study, a novel ultralight all-metallic sandwich panel with three-dimensional (3D) tube cellular cores mounted to the vehicle underbody was envisioned as such a protective system. A metallic substrate (mimicking vehicle bottom) was placed above the proposed sandwich panel to construct a sandwich-substrate combinative structure. A series of sandwich panels having 3D tube cellular cores were fabricated via argon protected welding and laser welding. Mechanical responses of the combinative structure subjected to the denotation of 6 kg TNT explosives shallow-buried in dry sand were experimentally measured. Full numerical simulations with the method of finite elements (FE) were subsequently carried out to explore the physical mechanisms underlying the observed dynamic performance and quantify the effects of key geometrical parameters and connection conditions of the protective system. The performance of the proposed sandwich panel under shallow-buried explosives was also compared with competing sandwich constructions having equal mass. Finally, a preliminary optimal design of the 3D tube cellular core was carried out.

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