Comparative Performance of Stiffened Sandwich Foam Panels under Impulsive Loading

Goel, Manmohan Dass; Matsagar, Vasant; Marburg, Steffen; Gupta, Anil

doi:10.1061/(asce)cf.1943-5509.0000340

Cited by 52 publications

(25 citation statements)

References 25 publications

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“…finite element mesh with global seed of 0.05) are only presented. Comparison of the results obtained from the FE simulation with the experimental results for such problems has already been reported by Goel et al (2011 and2013a). …”

Section: Blast Loadingmentioning

confidence: 70%

“…These configurations are arranged as per their increasing weights. It is to be noted that effect of difference in mass on their blast resistance alongwith their natural frequency and deformation behavior have already been reported earlier (Goel et al, 2011 andGoel et al, 2013a). The face-sheet and stiffened back-sheet are made of steel considering elasticplastic and strain hardening behavior with Young's modulus, E = 210 GPa, Poisson's ratio,  = 0.3, and density,  = 7,800 kg/m 3 (Goel et al, 2011).…”

Section: Stiffened Sandwich Foam Panel Geometry and Materials Propertiesmentioning

confidence: 92%

“…No studies, however, have been reported on the stiffened sandwich foam panels and their blast response, except author's recent work on the response of stiffened polymer foam sandwich structures under impulsive loading (Goel et al, 2013a). Goel et al (2013a) have reported effectiveness of stiffened sandwich structures with polymeric foams in blast resistance; however, effectiveness of stiffened metal foam sandwich structures has never been investigated.…”

Section: Introductionmentioning

confidence: 99%

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Blast resistance of stiffened sandwich panels with closed-cell aluminum foam

Goel

Matsagar

Gupta

2014

Lat. Am. j. solids struct.

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In the present investigation, response of the stiffened sandwich foam panels with closed-cell aluminum foam cores subjected to blast load is examined. The panels have the metal foam sandwiched between two steel sheets. To improve resistance of the sandwich foam panel against blast, stiffeners are provided and their dynamic response under varying blast load is studied. Blast load is applied using blast equations available in LS-DYNA which takes into account reflection of blast from surface of the sandwich foam panel. Finite element based numerical simulations for dynamic analysis are performed employing a combination of shell and solid elements for steel sheets and metal foam, respectively. Quantitative assessment of dynamic response of the sandwich foam panels is made, primarily focusing on peak central point displacement of back-sheet (opposite to explosion) of the panel. Several analyses are carried out with an objective to understand the effects of stiffener configuration, foam thickness, foam density, and standoff distance on the blast response. Results indicate that the provision of stiffeners along with metal foam considerably increases blast resistance as compared to the unstiffened panels with the metal foam.

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Section: Blast Loadingmentioning

confidence: 70%

Section: Stiffened Sandwich Foam Panel Geometry and Materials Propertiesmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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Blast resistance of stiffened sandwich panels with closed-cell aluminum foam

Goel

Matsagar

Gupta

2014

Lat. Am. j. solids struct.

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“…Briscoe et al [17] presented a model of shear buckling and local bearing failure in web-core sandwich panels and validated it in experiments. Goel et al [18] presented a model and numerical simulation of foam sandwich panels subjected to impulsive loading. Adopting a virtual testing approach, Wadee et al [19] characterized the mechanical behavior of folded core structures for advanced sandwich composites under flatwise compression loads.…”

Section: Introductionmentioning

confidence: 99%

Buckling Analysis of Sandwich Plate Systems with Stiffening Ribs: Theoretical, Numerical, and Experimental Approaches

Guang-ping

Wang

Xue

et al. 2019

Advances in Civil Engineering

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This paper discusses a global buckling analysis approach for sandwich plates with stiffening ribs. The approach is based on theoretical study and is implemented by the finite element method (FEM). The equilibrium equation corresponding to critical global buckling of the sandwich plate with stiffening ribs under simple supported boundary condition is established by the energy method. The critical buckling solutions for a typical rectangular sandwich plate system (SPS) with a single stiffening rib in the longitudinal direction are then investigated while varying the potential influencing factors. The shear rigidity within the inner core exerts little effect on global buckling and can be neglected. An FEM study on elastic buckling was then conducted via ANSYS software. The advantages of the SPS were highlighted via its elastic eigenvalue buckling numerical analysis with multiple stiffeners. The ultimate buckling loads were computed similarly for different influential factors. Finally, an SPS specimen was tested in a compression test. The results showed that when the rib spacing is large, the local buckling of the plates in the grillage is controllable and the SPS is more resistant to both local and global buckling. The results based on our theoretical method agreed well with those of the FEM and experimental results.

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“…Till the date, different materials have been used for blast response mitigation in structures such as polymeric foams, sand, fiber reinforced polymer (FRP) composites, porous materials, metal foams, sandwich structures and similar. Protective structures against blast loading include stiffened and unstiffened steel, reinforced concrete panels, and sandwich structures that can dissipate large amount of energy by plastic deformation under blast loading [1][2][3][4][5][6]. In the literature, several experimental and numerical studies exist on unstiffened and stiffened steel plates, composite armours, reinforced concrete panels and sandwich structures under blast loading [7][8][9][10][11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Comparative performance of composite sandwich panels and non-composite panels under blast loading

Matsagar

2015

Mater Struct

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The performance of non-composite panels built of steel plates, concrete slabs, and composite sandwich panels in blast response reduction is examined and compared in the present study. The dynamic response of steel stiffened and unstiffened plates, plain concrete, reinforced concrete, and steel fiber reinforced concrete slabs, stiffened and unstiffened steelfoam-steel, and steel-sand-steel sandwich panels is investigated through three-dimensional finite element analyses. Parametric studies are performed considering different stiffener configurations, panel thicknesses, materials in the composite sandwich panels (e.g. polyurethane, dytherm, cenosphere aluminum alloy syntactic foams, and sand), and varying thicknesses of foam and sand layers. Strain rate dependent material properties for steel, concrete, steel fiber reinforced concrete, foams, and sand are used in the analyses. Blast load is modeled using an equivalent pressure time history curve calculated as per the TM5-1300 manual and the modified Friedlander's equation. The central node displacement of the panels for peak blast overpressure 1.16 MPa applied for 6.1 ms is studied. The results indicate that the non-composite panels made up of steel fiber reinforced concrete slabs and cenosphere aluminum alloy syntactic foam composite sandwich panels show excellent blast response reduction capability as compared to (a) steel plate, (b) plain and reinforced concrete slabs, and (c) polyurethane and dytherm foam cored composite sandwich panels.

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Comparative Performance of Stiffened Sandwich Foam Panels under Impulsive Loading

Cited by 52 publications

References 25 publications

Blast resistance of stiffened sandwich panels with closed-cell aluminum foam

Blast resistance of stiffened sandwich panels with closed-cell aluminum foam

Buckling Analysis of Sandwich Plate Systems with Stiffening Ribs: Theoretical, Numerical, and Experimental Approaches

Comparative performance of composite sandwich panels and non-composite panels under blast loading

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