Experimental investigation of inertia effects in one-dimensional metal ring systems subjected to end impact — I. Fixed-ended systems

Reddy, T.Y.; Reid, S.R.; Barr, R. A.

doi:10.1016/0734-743x(83)90014-3

Cited by 61 publications

(31 citation statements)

References 9 publications

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“…Nested systems in the form of a line of rings subjected to end impact loading were examined by Reid and Reddy [20]. The authors were principally concerned with identifying the main mechanism which controls the deformation of such systems.…”

mentioning

confidence: 99%

Metallic tube type energy absorbers: A synopsis

Olabi

Morris

Hashmi

2007

Thin-Walled Structures

198

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mentioning

confidence: 99%

Metallic tube type energy absorbers: A synopsis

Olabi

Morris

Hashmi

2007

Thin-Walled Structures

198

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“…Nested systems in the form of a line of rings subjected to end impact loading were examined by Reid and Reddy [8]. The authors were principally concerned with identifying the main mechanism which controls the deformation of such systems.…”

Section: Oipdsmentioning

confidence: 99%

Optimised design of nested oblong tube energy absorbers under lateral impact loading

Olabi

Morris

Hashmi

et al. 2008

International Journal of Impact Engineering

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Abstract.Dynamic lateral crushing of mild steel (DIN 2393) nested tube systems was conducted using a ZWICK ROELL impact tester. The tests were performed with impact velocities ranging between 3 and 5 m/s, achieved using a fixed mass impinging onto the specimens under the influence of gravity. The various nested tube systems consisted of one standard and one optimised design. Their crushing behaviour and energy absorption capabilities were obtained and analysed.In addition to the experimental work, numerical simulations using the explicit code LS-DYNA were conducted; boundary conditions matching those observed in experiments were applied to the models.Results from the numerical method were compared against those obtained from experiments. An overprediction in force-deflection responses was obtained from the numerical code. An attempt was made to explain this inconsistency on the basis of the formation of plastic hinges and the validity of strain rate parameters used in the Cowper Symonds relation. It was found that the optimised energy absorbers exhibited a more desirable force-deflection response than their standard counterparts due to a simple design modification which was incorporated in the optimised design.

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“…These skin plates were made with sandwich composite materials. The materials used for manufacturing the composite skin plates were bi-axially balanced glass 6 fibre mat, epoxy resin and polyurethane foam. The thickness of the top and bottom composite skin plates was in the range of 1.5 to 2.5 mm based on the mass requirement.…”

Section: Experimental Set-upmentioning

confidence: 99%

“…Generic energy absorption devices which belong to two different categories (type I and II) based on their load-displacement curves were well studied in [5][6][7][8][9][10][11]. The loaddisplacement curve of type I is relatively "flat topped" and for type II the curve falls sharply after the peak crush load.…”

Section: Introductionmentioning

confidence: 99%

Close-range blast loading on empty recyclable metal beverage cans for use in sacrificial cladding structure

Palanivelu

Paepegem

Degrieck

et al. 2011

Engineering Structures

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This article deals with the experimental and numerical blast study on a single empty recyclable metal beverage cans. The idea is to make a macro-foam (sacrificial cladding structure) out of these cans to protect the main load bearing members of civil engineering structures from the air blast load. Close-range free air blast tests have been conducted to understand the crushing behaviour and the energy absorption of a single empty beverage can in detail. To conduct such an air blast test a special small-scale test set-up was designed and manufactured. The effect of skin plate surface area and its nature on the blast parameters is studied. Furthermore, the effect of inertia of the skin plate on the crushing performance of the beverage can is evaluated. Tests have been conducted with different plates (made of aluminium and sandwich composite materials) with different masses which represented the skin plate of the proposed sacrificial structure. The measured blast parameters from the experimental tests were compared with ConWep predicted data. Furthermore, the influence of the finite surface area of the skin plate on the clearing of the reflected pressure waves was also studied. The deformation behaviour and the corresponding energy absorption of empty beverage cans were captured. During the experimental blast tests it was observed that a part of the total reflected impulse was lost before it transfers to the non-sacrificial structure. Hence, in order to investigate this phenomenon an Eulerian-Lagrangian coupled analyses were conducted using Hydrocodes. The results from these analyses showed that the diffraction and ground reflected pressure wave caused the loss in impulse. The results from the numerical studies have been compared and validated with the experimental results.

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Experimental investigation of inertia effects in one-dimensional metal ring systems subjected to end impact — I. Fixed-ended systems

Cited by 61 publications

References 9 publications

Metallic tube type energy absorbers: A synopsis

Metallic tube type energy absorbers: A synopsis

Optimised design of nested oblong tube energy absorbers under lateral impact loading

Close-range blast loading on empty recyclable metal beverage cans for use in sacrificial cladding structure

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