Blast resistance of metallic tube-core sandwich panels

Xia, Zhicheng; Wang, Xihao; Fan, Hualin; Li, Yuchun; Jin, Fengnian

doi:10.1016/j.ijimpeng.2016.06.001

Cited by 40 publications

(5 citation statements)

References 33 publications

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“…The author achieved an enhancement in the blast mitigation characteristics. 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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“…Both of the methods are implemented in LS-DYNA and they are commonly used for reproducing blast events. Numerous examples can be found in the literature using either ALE [30][31][32][33][34][35] or LBE [36][37][38][39][40][41][42].…”

Section: Blast Load Modellingmentioning

confidence: 99%

Cork Core Sandwich Plates for Blast Protection

et al. 2020

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A numerical model is developed and validated to analyse the performance of aluminium skin and agglomerated cork core sandwich plates subjected to blast loads. Two numerical approaches are used and thoroughly compared to generate the blast loading: an Arbitrary-Lagrangian–Eulerian approach and the Load Blast Enhanced method. Both of the models are validated by comparing the numerical results with experimental observations. A detailed analysis of the sandwich behaviour is done for both approaches showing small differences regarding the mechanical response of the sandwich structure. The results obtained from the numerical models uncover the specific energy absorption mechanisms happening within the sandwich plate components. A new core topology is proposed, based on these results, which maximises the energy absorption capacity of the plate, keeping the areal density unchanged. A wavy agglomerated cork core is proposed and the effects of different geometrical parameters on the energy absorption are thoroughly analysed and discussed. The proposed optimised plate configuration shows an increase in the total absorbed energy of close to 40% relative to a reference case with the same areal density. The adopted optimisation methodology can be applied to alternative configurations to increase the performance of sandwich structures under blast events.

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“…The results indicated that a similar thickness of the plate and core tube led to the highest energy dissipation of the sandwich plate. In addition, the protection performance and impact behaviour of the sandwich-type sacrificial cladding under blast loads have been widely studied [48][49][50][51]. Theobald and Nurick [50] proposed a sandwich-type panel with thin-walled tubes to resist blast loads and numerically studied its dynamic response under blast loads.…”

Section: Introductionmentioning

confidence: 99%

Behaviour of a Sacrificial Cladding with Foam Concrete-Filled Square Tubes under Impact Loads

Wang

Zhai

2023

Buildings

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In this paper, a new sacrificial cladding with foam concrete-filled square tubes (FCFST sacrificial cladding) was developed for dissipating impact energy. The impact experiment was conducted on the FCFST sacrificial claddings using a drop hammer impact experiment system, and the finite element simulation analysis was performed using the explicit nonlinear program LS-DYNA. The deformation modes, force–displacement responses and energy absorption performances of the FCFST sacrificial claddings were discussed. The results indicated that the impact responses of the FCFST sacrificial cladding could be classified into four stages, and the energy absorption performance could be enhanced by increasing the contact area between the sacrificial cladding and impactor. Foam concrete-filled tubes that underwent obvious plastic deformation dissipated more impact energy than other parts of the sacrificial cladding, and three deformation modes could be identified in theses tubes. Furthermore, the effects of the thickness ratio of the top plate to tube, width-to-thickness ratio of the tube and impact location on the impact behaviour of the FCFST sacrificial cladding were numerically studied. It was found that decreasing the thickness ratio of the top plate to tube could enhance the energy absorption performance of the FCFST sacrificial cladding. However, the impact location was found to have little effect on the energy absorption unless it was close to the edge of the sacrificial cladding.

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Blast resistance of metallic tube-core sandwich panels

Cited by 40 publications

References 33 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

Cork Core Sandwich Plates for Blast Protection

Behaviour of a Sacrificial Cladding with Foam Concrete-Filled Square Tubes under Impact Loads

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