The deformation and shear failure of peripherally clamped centrally supported blast loaded circular plates

Cloete, T.J.; Nurick, G.N.; Palmer, Randy

doi:10.1016/j.ijimpeng.2005.06.002

Cited by 34 publications

(28 citation statements)

References 16 publications

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“…8. The trend-line for the annular plates mentioned by Cloete 22 , et al had a gradient of 0.62, approximately double that of the perforated plates reported herein. The nondimensional analysis accounts for parameters such as plate thickness, dia and yield stress, but does not account for the geometry of the perforations (except in terms of the plate mass, and distance from displacement edge to boundary edge).…”

Section: Results and Observationssupporting

confidence: 44%

“…Since the perforated plates contained several holes, a modification to the aspect ratio l was introduced, following Cloete 22 , et al Cloete 22 , et al derived, for blast-loaded annular plates, similar equations to Nurick and Martin 21 using an energy analysis with an assumed mode shape to calculate the strain energy. These are shown, in slightly modified form, in Eqns (7) and (8).…”

Section: Results and Observationsmentioning

confidence: 99%

“…where R i is the radius of the central perforation; R h is the radius of the six off-centre perforations, and For comparison, experimental results on blastloaded annular plates from Cloete 22 , et al have been put into the same nondimensional form and plotted with the data in Fig. 8.…”

Section: Results and Observationsmentioning

confidence: 99%

“…The nondimensional analysis accounts for parameters such as plate thickness, dia and yield stress, but does not account for the geometry of the perforations (except in terms of the plate mass, and distance from displacement edge to boundary edge). The plates tested by Cloete 22 , et al were of 100 mm dia with a 22 mm dia central hole, giving a BR of 0.95. This is higher than the BR of the perforated plates examined herein (0.87).…”

Section: Results and Observationsmentioning

confidence: 99%

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Perforated Plates as Passive Mitigation Systems

Langdon

Nurick

Balden

et al. 2008

DSJ

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This paper presents the results of tests on fully-clamped circular plates subjected to blast loading directed down a tube. Four series of tests were performed. In one set of experiments, the blast wave was allowed to progress unhindered down the tube to impinge upon the plate, and in the other tests, perforated plates were placed in the path of the blast wave to hinder progression down the tube, disrupting the blast and absorbing some of the kinetic energy. Results of the tests indicate that the perforated plates can be used as a form of passive mitigation.

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Section: Results and Observationssupporting

confidence: 44%

Section: Results and Observationsmentioning

confidence: 99%

Section: Results and Observationsmentioning

confidence: 99%

Section: Results and Observationsmentioning

confidence: 99%

See 2 more Smart Citations

Perforated Plates as Passive Mitigation Systems

Langdon

Nurick

Balden

et al. 2008

DSJ

Self Cite

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“…In a large number of these studies, the maximum residual plate deformation is measured post-test [3,4,5,6], often in addition to a survey of the final deformed profile of the plate [7,8,9,10,11]. Whilst this may give a detailed description of the spatial deformation of the plate, it is usually more desirable to determine the transient deformation of the target structure, as this is a fundamental requirement for numerical validation of the time-varying features of the loading function.…”

Section: Introductionmentioning

confidence: 99%

Displacement timer pins: An experimental method for measuring the dynamic deformation of explosively loaded plates

Fay

Rigby

Tyas

et al. 2015

International Journal of Impact Engineering

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The measurement of dynamic deformation of an explosively loaded plate is an extremely onerous task. Existing techniques such as digital image correlation are expensive and the equipment may be damaged by explosively driven debris/ejecta, particularly if it is necessary to locate such equipment close to loaded elements which are likely to fail. A new, inexpensive and robust measurement technique for use in full-scale blast testing is presented, which involves the placement of displacement timer pins (DTPs) at pre-defined distances from the rear surface of the centre of a plate. A strain gauge on the perimeter of each pin records the time at which the plate comes into contact with the end of each DTP and hence has deformed to that value of displacement, giving a direct measure of the time-varying deformation at a discrete point on the plate. An experimental proof-of-concept was conducted and the results are compared with numerical displacements determined using LS-DYNA. The numerical and experimental results were in very good agreement, which suggests that the proposed experimental method offers a valuable means for determining the full-scale response of structures subjected to blast loads in aggressive environments. Further improvements to the experimental procedure are outlined, along with applications where the DTPs are particularly suited.

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