An experimental and numerical study of blast induced shock wave mitigation in sandwich structures

Schimizze, Benjamin R.; Son, Steven F.; Goel, Rahul; Vechart, Andrew P.; Young, Laurence R.

doi:10.1016/j.apacoust.2012.05.011

Cited by 25 publications

(10 citation statements)

References 9 publications

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“…Other approaches to dissipate the energy from a blast include the use of air bladders and fluid-filled chambers (Morgan, 1971;Ponomarev and Ponomaryova, 2006;Zhuang et al, 2003;Nesterenko, 2002;Hartman et al, 2006;Allen et al, 2004;Gelfand et al, 2001), granular systems (Leonard and Daraio, 2012;Nesterenko, 2001;Daraio et al, 2006), and filled foams (Schimizze et al, 2013). These approaches rely on variations in the mass and stiffness of the components to disperse and attenuate the blast.…”

mentioning

confidence: 97%

Design of armor for protection against blast and impact

Rahimzadeh

Arruda

Thouless

2015

Journal of the Mechanics and Physics of Solids

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a b s t r a c tThe features of blast and impact that can damage a delicate target supported by a structure include both the peak pressure and the impulse delivered to the structure. This study examines how layers of elastic and visco-elastic materials may be assembled to mitigate these features. The impedance mismatch between two elastic layers is known to reduce the pressure, but dissipation is required to mitigate the transmitted impulse in light-weight armor. A novel design concept called impact or blast tuning is introduced in which a multi-layered armor is used to tune the stress waves resulting from an impact or blast to specific frequencies that match the damping frequencies of visco-elastic layers. The material and geometrical parameters controlling the viscous dissipation of the energy within the armor are identified for a simplified one-dimensional system, to provide insight into how the optimal design of multi-use armor might be based on this concept.

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confidence: 97%

Design of armor for protection against blast and impact

Rahimzadeh

Arruda

Thouless

2015

Journal of the Mechanics and Physics of Solids

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“…In several cases, SDOF models have been specifically developed for thin elastic plates in the nonlinear regime. Solutions have been proposed to carry out simple SDOF analysis on various structural systems under blast pressure, such as windows [2][3][4], composite panels [5][6][7][8][9][10][11][12], doors or walls [13][14][15][16][17][18], and so on. With the advances in numerical analysis and computational technology, several numerical methods can be employed to obtain viable solutions (i.e., finite element (FE) or finite difference (FD) methods, etc.).…”

Section: Introductionmentioning

confidence: 99%

“…Li and Jones investigated the dynamic response of clamped circular plates subjected to blast loading, using the Johansen yield criterion which includes the effect of bending moments along with transverse shear [35]. Based on literature review [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35], it is important to mention that most of the available SDOF models for thin elastic plates are based on bending theory only, wherein membrane effects were considered through a bending resistance function and therefore indirectly accounted in the form of an equivalent bending stiffness only. Earlier researchers, in some other cases, employed separately the membrane effect (as a nonlinear term of the equation of motion) and explored the SDOF response of thin elastic plates under blast loading [33].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Single‐Degree‐of‐Freedom Analysis of Thin Elastic Plates Subjected to Blast Loading Using an Energy‐Based Approach

Goel

Thimmesh

Shirbhate

et al. 2020

Advances in Civil Engineering

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Single-degree-of-freedom (SDOF) models are known to represent a valid tool in support of design. Key assumptions of these models, on the other hand, can strongly affect the expected predictions, hence resulting in possible overconservative or misleading estimates for the response of real structural systems under extreme actions. Among others, the description of the input loads can be responsible for major design issues, thus requiring the use of more refined approaches. In this paper, a SDOF model is developed for thin elastic plates under large displacements. Based on the energy approach, careful attention is given for the derivation of the governing linear and nonlinear parameters, under different boundary conditions of technical interest. In doing so, the efforts are dedicated to the description of the incoming blast waves. In place of simplified sinusoidal pressures, the input impulsive loads are described with the support of infinite trigonometric series that are more accurate. The so-developed SDOF model is therefore validated, based on selected literature results, by analyzing the large displacement response of thin elastic plates, under several boundary conditions and real blast pressures. Major advantage for the validation of the proposed SDOF model is obtained from experimental finite element (FE) and finite difference (FD) models of literature, giving evidence of a rather good correlation and confirming the validity of the presented formulation.

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“…To study the blast mitigation properties to prevent traumatic brain injuries (TBi) of US military soldier due to IEDs, the protective helmets made up of vinyl-nitrile foam shell filled with water, glycerin, glass beads, Der-Tex foam etc. were tested in explosive driven shock tube and were modelled in ABAQUS 45 . The linear shock-Hugoniot relation was used to model the filler materials in conjunction with the mie-grüneisen equation of state.…”

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confidence: 99%

Blast Valve Design and Related Studies : A Review

2016

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The protective structures required for performing critical operations are vulnerable to the blast and shock loads of advanced weapons. A blast valve is an important component of such structures for ventilation during normal conditions and for protection from blast/ shock during explosion. In this paper, various aspects of blast valve design and related studies are briefly reviewed. The concept and effects of blast wave, blast impact, numerical modelling and deformation of circular plate (one of the critical components of blast valve) have been discussed. The merits and demerits of sensing mechanisms viz. remote and direct sensing are discussed. The leakage of blast pressure during finite closing period of the valve (one of the critical problems) and the shock tube as a major experimental facility for testing of blast valves are briefly discussed.Keywords: Blast valve, wave, leakage, closure mechanism, shock tube Figure 1. Schematic of blast closure valve.

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An experimental and numerical study of blast induced shock wave mitigation in sandwich structures

Cited by 25 publications

References 9 publications

Design of armor for protection against blast and impact

Design of armor for protection against blast and impact

Enhanced Single‐Degree‐of‐Freedom Analysis of Thin Elastic Plates Subjected to Blast Loading Using an Energy‐Based Approach

Blast Valve Design and Related Studies : A Review

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