Using a shock tube to predict the response of polymeric foam to a blast loading

Ouellet, Simon; Frost, David L.; Bouamoul, Amal

doi:10.1051/jp4:2006134121

Cited by 7 publications

(11 citation statements)

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“…[3]) установил различные зоны усиления и ослабления и предложил концепцию зо-ны, где пена может ослаблять давление в ударной волне, в зависимости от слабых и сильных ударных волн. В работе [18] проведено сравнение двух типов нагружения полимерной пенывзрывом и ударной волной. В [19] изучали влияние свойств сжимаемой металлической пены с открытой пористостью на усиление давления при ударном нагружении.…”

Section: Doi 1015372/fgv20150314unclassified

“…Это связано с тем, что давление в падающей волне находилось в упругой области пены, что вызвало повышение отраженного давления. Подобное поведение наблюдалось также в работе [18] для полимерных пен в случае, когда давление оставалось в пределах упругой области. В этом случае расчетное значение ДКН составляло 2.92, что указывало на рост давления до более высокого уровня по сравнению с экспериментом при наличии только жесткой стенки.…”

Section: ударные испытания образцов пеныunclassified

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Interaction of a Shock Wave with a Closed Cell Aluminum Metal Foam

2015

FGV

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Section: Doi 1015372/fgv20150314unclassified

Section: ударные испытания образцов пеныunclassified

Interaction of a Shock Wave with a Closed Cell Aluminum Metal Foam

2015

FGV

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“…However, since the loading time and loading strain displacement of the split Hopkinson pressure bar have certain limitations, the condition of high strain rate loading for closed cell polymer foam of large thickness cannot be achieved. The results from impact tests are augmented with high strain rate loading results obtained from a shock tube-based test method [35][36][37]. Using a shock tube as a controlled experimental platform is very helpful for determining the high strain rate properties of materials.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Energy Absorption Capabilities of Polyethylene Foam under Impact Deformation

2021

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Foams are widely used in protective applications requiring high energy absorption under impact, and evaluating impact properties of foams is vital. Therefore, a novel test method based on a shock tube was developed to investigate the impact properties of closed-cell polyethylene (PE) foams at strain rates over 6000 s−1, and the test theory is presented. Based on the test method, the failure progress and final failure modes of PE foams are discussed. Moreover, energy absorption capabilities of PE foams were assessed under both quasi-static and high strain rate loading conditions. The results showed that the foam exhibited a nonuniform deformation along the specimen length under high strain rates. The energy absorption rate of PE foam increased with the increasing of strain rates. The specimen energy absorption varied linearly in the early stage and then increased rapidly, corresponding to a uniform compression process. However, in the shock wave deformation process, the energy absorption capacity of the foam maintained a good stability and exhibited the best energy absorption state when the speed was higher than 26 m/s. This stable energy absorption state disappeared until the speed was lower than 1.3 m/s. The loading speed exhibited an obvious influence on energy density.

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“…Hanssen attributed this angle (energy) increase to the continuous transformation of the shape of the initially planar panel surface into a concave shape during the blast. Ouellet et al [10] conducted both shock tube experiments and free-field blast trials on three polymeric foams of varying thickness and density and concluded that three different regimes of amplification and attenuation of foam transmitted overpressure can be identified.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Force Enhancement by Cellular Material under Blast Load

Yang

Gao

2013

Advances in Mechanical Engineering

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The cause of force enhancement phenomenon when using cellular material, such as metal foam, for blast protection is discussed using both finite element method (FEM) and analytical method. Finite element (FE) models of cellular material under blast load are presented, in which the blast load is modeled by CONWEP blast function and the cellular material is modeled by the homogenized modeling method and the multiunit-cell modeling method. A one-dimensional analytical model is also presented for comparison purpose. Utilizing these models, an aluminum foam bar under blast load is simulated and the mechanism of both force attenuation and enhancement are depicted. The relationship between blast load intensity and the length of the foam bar is analyzed based on the simulation. It is found that the time of momentum transfer between the compacted foam bar and the protected structure is very short compared to the total time of the blast event, which causes force enhancement. Corresponding countermeasures are proposed based on this finding. The study will not only provide new modeling methods for the simulation of cellular material subjected to blast load but will also be beneficial to understand the mechanisms of force attenuation and enhancement, so as to seek for countermeasures.

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Using a shock tube to predict the response of polymeric foam to a blast loading

Cited by 7 publications

References 0 publications

Interaction of a Shock Wave with a Closed Cell Aluminum Metal Foam

Interaction of a Shock Wave with a Closed Cell Aluminum Metal Foam

Evaluation of Energy Absorption Capabilities of Polyethylene Foam under Impact Deformation

Numerical Simulation of Force Enhancement by Cellular Material under Blast Load

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