Experimental study on the dynamic response of foam-filled corrugated core sandwich panels subjected to air blast loading

Zhang, Pan; Cheng, Yuansheng; Liu, Jun; Li, Yong; Zhang, Changzai; Hou, Hetao; Wang, Hao

doi:10.1016/j.compositesb.2016.08.038

Cited by 75 publications

(33 citation statements)

References 41 publications

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“…Recent studies investigated panels of a dome-shaped tubular core of varying clearance [10,11]. On the other hand, foam fillings and transverse tubular cores in sandwiched assemblies were also investigated [4,12].…”

Section: Of 18mentioning

confidence: 99%

Study of Mild Steel Sandwich Structure Energy Absorption Performance Subjected to Localized Impulsive Loading

2020

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Extensive research focus had been given to sacrificial sandwich panels to mitigate the effects of blast loads. This is due to their ability to distribute the load and absorb a significant portion of the blast energy. This paper studies the behavior of sacrificial sandwich mild steel panels of axially oriented octagonal tapered tubular cores subjected to near-field impulsive blast. The deformation behavior and several assessment parameters consisting of the peak force, stroke efficiency, energy absorption and core efficiency were investigated using validated finite element analysis. The developed deformation modes were mainly influenced by the top plate and tube thickness. Tubes of a 5° taper performed unfavorably, exhibiting increased peak force and lower energy absorption. Panels of top plate thickness of 4 mm exhibited higher stroke efficiency as compared to panels of lower thickness. The top plate and tube thickness significantly affected energy absorption. An increase of 73.5% in core efficiency was observed in thick-plate panels as compared to thin-plate ones.

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Section: Of 18mentioning

confidence: 99%

Study of Mild Steel Sandwich Structure Energy Absorption Performance Subjected to Localized Impulsive Loading

2020

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“…All the air blast experiments were implemented in an explosion chamber with a 5 m inner diameter and 7.5 m height [10]. The details of the testing system are provided in the literature [47].…”

Section: Methodsmentioning

confidence: 99%

“…Bahei-El-Din and Dvorak [9] have investigated the dynamic behavior of polyurethane/polyurea-reinforced sandwich plates subjected to blast loads and indicated that the introduction of polyurethane/polyurea interlayers leads to a pronounced reduction of core compression and overall deflection. Zhang et al [10] have carried out an experimental study on the deflection response of sandwich panels with a polyurethane core subjected to air blast loads, and their results revealed that filling a polyurethane core was an effective method of reducing the deflections of face sheets. Jamil et al [11] have experimentally and numerically studied the blast response of aluminum/polyurethane sandwich plates.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Spraying Strategy on the Dynamic Response of Polyurea-Coated Metal Plates to Localized Air Blast Loading: Experimental Investigations

Chen

Hou

et al. 2019

Polymers

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Polyurea has attracted considerable attention owing to its potential applications in protective fields to improve the resistant performance of structures subjected to damage loads resulting from intentional or accidental explosions. However, different spraying strategies of polyurea may lead to significant differences in overall resistance performance of polyurea-coated structures, and the underlying mechanisms have not been clear until now. This study aims to elucidate the influence of spraying strategy, i.e., spraying area, spraying thickness, and spraying interface condition, on the dynamic response of polyurea-coated steel plates under localized air blast loading. Three types of plates manufactured using different spraying strategies were adopted to evaluate their blast-resistant performance. The spraying strategies used were (i) whole-area spraying, (ii) partial-area spraying, and (iii) in-contact backing of polyurea on the rear surfaces of steel plates. In addition, the influence of spraying thickness of polyurea for whole-area sprayed plates was evaluated. The energy absorbing mechanisms of polyurea backing layers were highlighted. The energy absorption of plates was quantitatively analyzed. The results show that the air blast resistances of whole-area sprayed and in-contact backed plates are both superior to, whereas that of partial-area sprayed plates is inferior to, bare steel counterparts. A suitable spraying thickness of polyurea can significantly reduce the damage of the front steel layer, whereas excessive spraying thickness decreases the overall air blast resistance of plates. The polyurea backing layer exhibits favorable performance in absorbing energy under a whole-area spraying condition. This study provides useful guidance for the design of polyurea-coated metal plates in engineering applications.

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“…Hence, a sandwich structure appeared to replace this intertwined co‐continuous structure. The typical sandwich structure with two strong and stiff thin sheets, denoted skins, separated by a low density core is a bearing structure with excellent mechanical performance, impact resistance and multi‐functional potentials . Therefore, the sandwich composite structure can be widely used in aerospace, sporting and automotive applications.…”

Section: Introductionmentioning

confidence: 99%

A novel combination of sandwich and co‐continuous structure based on polypropylene and styrene‐butadiene‐styrene block copolymer formed with wide range of polypropylene content

Wang

Zhang

2018

J of Applied Polymer Sci

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The styrene-butadiene-styrene block copolymer (SBS)/polypropylene (PP) blends with a unique sandwich layered cocontinuous structure were prepared by melt compounding. Differing from single conventional co-continuous and sandwich structure, this structure was formed, where pure PP and co-continuous SBS/PP phase acting as the face sheets and core. Even though the volume content was 20 or 10 vol %, PP always amazingly formed a continuous phase in SBS/PP blends, whereas the morphology of SBS phase relatively changed from dispersed particles to continuous network as its content increased to 50 vol %. For immiscible SBS/PP blends, due to the huge difference of complex viscosity and surface tension between SBS and PP, a pure PP layer existed on the surface of blends which can be ascribed to the PP enrichment. Herein, the structure of blends with more than 50 vol % SBS was presented as sandwich layered co-continuous structure by combining the pure PP layer and co-continuous structure. V C 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46580.

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Experimental study on the dynamic response of foam-filled corrugated core sandwich panels subjected to air blast loading

Cited by 75 publications

References 41 publications

Study of Mild Steel Sandwich Structure Energy Absorption Performance Subjected to Localized Impulsive Loading

Study of Mild Steel Sandwich Structure Energy Absorption Performance Subjected to Localized Impulsive Loading

The Influence of Spraying Strategy on the Dynamic Response of Polyurea-Coated Metal Plates to Localized Air Blast Loading: Experimental Investigations

A novel combination of sandwich and co‐continuous structure based on polypropylene and styrene‐butadiene‐styrene block copolymer formed with wide range of polypropylene content

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