A numerical simulation of metallic cylindrical sandwich shells subjected to air blast loading

Jing, Lin; Yang, Fei; Wang, Zhihua; Zhao, Longmao

doi:10.1590/s1679-78252013000300010

Cited by 13 publications

(3 citation statements)

References 21 publications

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“…In another study, Jing et al investigated cylindrical sandwich structures air blast response numerically. In the finite element model, finite shock conditions and nonlinear air compressibility are adopted according to Kambouchev-Noels-Radovitzky (KNR) theory, and weight optimization was conducted to redefine the face-sheet thickness, core thickness and core relative density [143]. A similar conclusion was stated by Li et al where they numerically investigated the blast performance of spherical sandwich panels and revealed that spherical sandwich panels showed better blast performance than cylindrical-shape panels [144].…”

Section: The Effect Of Radius Of Curvature Of Sandwich Panelmentioning

confidence: 70%

The effect of geometrical parameters on blast resistance of sandwich panels—a review

Gülcan¹,

Günaydın²,

Tamer

2023

Funct. Compos. Struct.

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Many engineering structures, especially the defense applications, need to be reinforced against blast loads due to a nearby explosion. Today, much more attention needs to be given to this issue because of increased exposure to explosions, and natural disasters. Different solutions have been used in the literature to mitigate blast loading effects. One of these applications, sandwich panels, are good candidates for blast loading applications. In a sandwich panel structure, several parameters have considerable effects on the deflections, deformations, and the energy absorption capability. The most important of these parameters are: i) the material and thickness of the front and back face sheets and core; ii) core density and grading; iii) core and face sheet types; iv) filling and stiffening strategies of the core; v) radius of curvature of the panel; vi) mass of explosive charge; and vii) standoff distance. The aim of this paper is to review these critical aspects of blast loading of sandwich panels to provide an overall insight into the state of the art of the application.

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Section: The Effect Of Radius Of Curvature Of Sandwich Panelmentioning

confidence: 70%

The effect of geometrical parameters on blast resistance of sandwich panels—a review

Gülcan¹,

Günaydın²,

Tamer

2023

Funct. Compos. Struct.

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“…Liu et al [16] used the numerical simulation to prove that a hollow cylindrical shells sandwich structure with a gradient metal foam core has a better blast resistance than hollow cylindrical shells without a gradient foam core. Through experiments and numerical simulations, Jing et al [17][18][19][20] studied the effect of geometric structure (i.e., panel thickness, the relative density of core layer, and sample curvature) on the energy absorption and destruction of cylindrical metal shells under dynamic loads. Pan et al [21] conducted a finite element analysis on the mechanical properties of the doublelayer aluminum foam sandwich curved panels.…”

Section: Introductionmentioning

confidence: 99%

Mechanical response of aluminum foam sandwich structure under impact load

Zhang

2022

Mater. Res. Express

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This study investigates the mechanical response of aluminum foam sandwich panels, sandwich cylindrical shells, and sandwich shallow shells under impact loads. First, a finite element model of the sandwich panel was established, and an impact load was applied. The numerical results were compared with theoretical and experimental results to verify the model's effectiveness. Second, the energy absorption efficiency and overall deformation of sandwich panels, sandwich cylindrical shells, and sandwich shallow shells under the same impact load were studied. The research shows that the energy absorption performance of the sandwich shells is better than that of the sandwich panels, and the overall deformation is less than that of the sandwich panels. The effect of increasing panel thickness on the two types of sandwich shell studies is based on this basis. The conclusions describe that increasing the panel thickness will significantly reduce the structure's energy absorption efficiency and deformation. Finally, the effect of single-and double-layer structure on the impact resistance of sandwich shells was studied when the total thickness of the sandwich structure was unchanged. The results show that compared with the single-layer structure, the energy absorption efficiency, overall deformation, and contact force between the projectile and structure of the double-layer structure will be reduced.

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“…Most of the past research work has been carried out on the sandwich foam panels with different varieties of core ranging from fiber reinforced polymer (FRP), natural material (air, sand/soils), polymeric foams, honeycombs and commercially available metal foams (Hanssen et al, 2002aand 2002b, Qiu et al, 2003, Xue and Hutchinson, 2003, Radford et al, 2006, Sriram et al, 2006, NematNasser et al, 2007, Bahei-El-Din and Dvorak, 2008, Tekalur et al, 2008, Karagiozova et al, 2009, Zhu et al, 2009, Langdon et al, 2010, Jing et al, 2013, Chang et al, 2013, and Liu et al, 2013. 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).…”

Section: Introductionmentioning

confidence: 99%

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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A numerical simulation of metallic cylindrical sandwich shells subjected to air blast loading

Cited by 13 publications

References 21 publications

The effect of geometrical parameters on blast resistance of sandwich panels—a review

The effect of geometrical parameters on blast resistance of sandwich panels—a review

Mechanical response of aluminum foam sandwich structure under impact load

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

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