Experimental study on failure mechanisms of sandwich panels with multi-layered aluminum foam/UHMWPE laminate core under combined blast and fragments loading

Cai, Sipei; Li, Jun; Zhang, Pan; Li, Chunpeng; Cheng, Yuansheng; Chen, Changhai

doi:10.1016/j.tws.2020.107227

Cited by 45 publications

(17 citation statements)

References 43 publications

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“…The enhancements added to the explosive charges differ in mass, shape, and geometry from one configuration to another. The full range of possibilities in the shape and the mass of the charge, together with the geometry, shape and mass of the fragments is considered as one of the great difficulties in IED research [13,[19][20][21]. Therefore covering the whole range of possibilities in a laboratory-scale experiment is not realistic.…”

Section: Description Of the Experimental Setupmentioning

confidence: 99%

“…A number of research efforts addressing this issue have been reported. Sipei et al [13] experimentally investigated the different failure mechanisms of a sandwich panel under combined blast and fragment impact loading. The combined loading was generated using prefabricated cemented tungsten carbide fragments attached to the bottom surface of a cylindrical explosive charge.…”

Section: Introductionmentioning

confidence: 99%

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An Explosive Driven Shock Tube-Based Laboratory Scale Test for Combined Blast and Fragment Impact Loading

et al. 2022

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This work is a part of a larger research effort to better understand the combined effect of the blast wave and fragment impacts following the detonation of a shrapnel bomb. It is known that the time interval Δt, which represents the difference in arrival time between the blast wave front and the fragment at the position of a given target object, has a significant influence on its response mode. This paper presents insights into the establishment of a laboratory scale technique to generate a combined blast loading and single or multiple projectile impacts on a target. The objective of the setup is to control the time interval Δt to a certain extent so that the different response modes of the tested structures can be investigated. In order to reduce the complexity associated with the random nature of the shrapnel, steel ball bearings are used to simulate the projected fragments. They are embedded in a solid explosive charge, which is detonated at the entrance of an explosive driven shock tube. The experimental work demonstrates that it is possible to orient the path of a single projectile inside the tube when aiming at a target positioned at its exit. The setup guarantees the generation of a well-controlled planar blast wave characterized by its peak pressure, impulse and blast wave arrival time at the exit of the tube. The influence of the mass of the charge and the diameter of the projectile on its velocity study shows that for the same charge mass, the time interval increases with increasing projectile diameter. The experiments are numerically simulated based on an Eulerian approach using the LS-DYNA finite element software. The computational model allows to reveal details about the projectile flight characteristics inside the tube. Both the experimental and numerical data show the influence of the charge and projectile parameters on the time interval.

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Section: Description Of the Experimental Setupmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Explosive Driven Shock Tube-Based Laboratory Scale Test for Combined Blast and Fragment Impact Loading

et al. 2022

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“…Experimental research has been conducted to investigate the explosion resistance for composite materials with a different laminate condition by Refs. [61,62]. These studies reported the effectiveness of laminate on blast resistance, and also describes the optimal location of the laminate against such a loading condition.…”

Section: Structural Damage Analysis Under Explosion Loadingmentioning

confidence: 99%

“…These studies reported the effectiveness of laminate on blast resistance, and also describes the optimal location of the laminate against such a loading condition. Cai et al [61] found the influence of UHMWPE layer location on the interaction of the stress waves between the faces of multi-layered core. This paper described the mechanism of penetration of blast waves and fragments through the multi faces, thereby analysing the level of local bending deformation on each side.…”

Section: Structural Damage Analysis Under Explosion Loadingmentioning

confidence: 99%

A Critical Review of a Computational Fluid Dynamics (CFD)-Based Explosion Numerical Analysis of Offshore Facilities

Kang

Wang

et al. 2022

Arch Computat Methods Eng

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In oil and gas industries, the explosive hazards receive lots of attention to achieve a safety design of relevant facilities. As a part of the robust design for offshore structures, an explosion risk analysis is normally conducted to examine the potential hazards and the influence of them on structural members in a real explosion situation. Explosion accidents in the oil and gas industries are related to lots of parameters through complex interaction. Hence, lots of research and industrial projects have been carried out to understand physical mechanism of explosion accidents. Computational fluid dynamics-based explosion risk analysis method is frequently used to identify contributing factors and their interactions to understand such accidents. It is an effective method when modelled explosion phenomena including detailed geometrical features. This study presents a detailed review and analysis of Computational Fluid Dynamics-based explosion risk analysis that used in the offshore industries. The underlying issues of this method and current limitation are identified and analysed. This study also reviewed potential preventative measures to eliminate such limitation. Additionally, this study proposes the prospective research topic regarding computational fluid dynamics-based explosion risk analysis.

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“…It is found that the metal foam effectively reduces the penetration depth and backplane deformation of the composite structure, and the metal foam composite structure has excellent antipenetration performance. Cai et al [14] conducted an experimental study on the failure mechanism of aluminum foam/ultrahigh molecular weight polyethylene composite structure under the combined loading of explosion and fragments. e results show that the aluminum foam in the composite structure can be beneficial to improve the comprehensive protection ability.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Modeling Studies of Stress Wave Propagation and Energy Dissipation Mechanism in Layered Composite Structures

Zou

Xiong

Yin

et al. 2021

Shock and Vibration

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Four composite structures (SiC/UHMWPE/TC4, SiC/TC4/UHMWPE, SiC/UHMWPE/MR/TC4, and SiC/TC4/MR/UHMWPE) were prepared using silicon carbide (SiC) ceramics, ultrahigh molecular weight polyethylene (UHMWPE), titanium alloy (TC4), and metal rubber (MR). The transmitted waves, failure forms, stress wave propagations, and energy dissipations of the composite structures were studied through Split Hopkinson Pressure Bar (SHPB) tests and numerical simulations. The results show that MR in composite structures can delay, attenuate, and smooth the stress wave, thereby reducing SiC damage. UHMWPE on the back of SiC provides cushioning for SiC, while TC4 on the back of SiC aggravates the damage of SiC. The composite structures with MR mainly dissipate the impact energy by reflecting energy, and the energy dissipation performance is better than that of composite structures without MR. A comprehensive comparison of transmitted waves, damage forms, stress wave propagations, and energy dissipations of the four composite structures shows that SiC/UHMWPE/MR/TC4 structure has the best impact resistance. Increasing the thickness of MR in the composite structures can improve the impact resistance, but there are also stress concentration and interface tensile stress.

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Experimental study on failure mechanisms of sandwich panels with multi-layered aluminum foam/UHMWPE laminate core under combined blast and fragments loading

Cited by 45 publications

References 43 publications

An Explosive Driven Shock Tube-Based Laboratory Scale Test for Combined Blast and Fragment Impact Loading

An Explosive Driven Shock Tube-Based Laboratory Scale Test for Combined Blast and Fragment Impact Loading

A Critical Review of a Computational Fluid Dynamics (CFD)-Based Explosion Numerical Analysis of Offshore Facilities

Experimental and Modeling Studies of Stress Wave Propagation and Energy Dissipation Mechanism in Layered Composite Structures

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