Numerical simulation and experimental validation of the dynamic response of aluminum plates under free air explosions

Spranghers, Ken; Vasilakos, Ioannis; Lecompte, David; Sol, Hugo; Vantomme, John

doi:10.1016/j.ijimpeng.2012.10.014

Cited by 72 publications

(33 citation statements)

References 30 publications

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“…Soutis et al (2011) studied the response of GLARE panels to air blast loading using both, ALE and ConWep methods. In other studies ALE method was also used in variety of different applications and purposes: Chafi et al (2009), Chung Kim Yuen et al (2012, Fox et al (2011), Jayasinghe et al (2013, Langdon et al (2010), Liu et al (2012), Ma et al (2013), Pi et al (2012), Spranghers et al (2013), Tai et al (2011). In order to efficiently represent FSI on higher scaled distances, other techniques like coupling of the empirical ConWep model with ALE (Todd (2010)) or ALE mapping techniques are used (Luccioni et al (2006), Zakrisson et al (2011)).…”

Section: Introductionmentioning

confidence: 99%

Minimum mesh design criteria for blast wave development and structural response - MMALE method

Trajkovski

Kunc

Perenda

et al. 2014

Lat. Am. j. solids struct.

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The Multi Material Arbitrary Lagrange Euler (MMALE) method is widely used method for numerical investigation of structural response under blast loading. However the method is very demanding for use at the other hand. In this paper are presented the results of the detailed numerical investigation in order to simplify some decisions contributing to the accuracy and efficiency of this model. The influence of mesh properties (particularly mesh size, its biasing and distance of the boundary (DoB) conditions from the deforming structure) on blast wave loading parameters and structural response is investigated in detail and based on the results minimum mesh design criteria is proposed. The results obtained are presented as a function of the scaled distance and additionally related to the radius of the charge. Validation studies were also done successfully.

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Section: Introductionmentioning

confidence: 99%

Minimum mesh design criteria for blast wave development and structural response - MMALE method

Trajkovski

Kunc

Perenda

et al. 2014

Lat. Am. j. solids struct.

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“…Digital image correlation (DIC) has been used to study the full-field dynamic deformation of plates [14,15,16,17,18,19]. DIC uses two high-speed video (HSV) cameras filming in stereo to gain a 3-dimensional perspective of the subject of interest.…”

Section: Introductionmentioning

confidence: 99%

“…Whilst DIC offers a more complete description of the response of the target structure, it has several limitations. DIC systems are expensive and therefore explosive experiments require heavily engineered structures to protect the equipment; such protection has been achieved in small-scale testing (40 g C4 charge) by embedding the target within a larger reflecting surface [17,18], but is impractical for medium to large-scale tests. Alternatively the DIC system can simply be moved further from the explosive event, however the distance the DIC system can be moved from the target is limited by the geometry of the test set-up and is a function of the desired target resolution, focal length of the lens, and the distance required between each HSV camera, which increases as distance from the target increases.…”

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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“…Most analytical studies related to blast vibrations can roughly be divided into experimental and numerical simulation analyses [10]- [12]. Blast experiments require substantial costs, exhibit location limitations, and possess a certain level of danger, limiting blast-related on-site experiments.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Dynamic Response of Slope under the Blasting Vibration Effect

Wang¹

2014

IJCEE

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Abstract-The effect of blast-induced seismic effect on slope can be considered as a transferred and transformed process of the energy. It is necessary to know the attenuation law of blast-induced seismic wave, in order to make relatively accurate estimation for the extent of the slope affected by blasting vibration. This study applied the LS-DYNA software and adopted the Arbitrary Lagrangian-Eulerian method for numerical analysis. Simulate the surface blast of C-4 explosives in a semi-infinite space, in order to explore the slope stability with different height and gradient are computed. The result shows that the propagation law and attenuation characteristics of the detonation earthquake wave on slope are different to the condition of level ground. Comparing the horizontal displacement and vertical acceleration of the top and toe of the slope, vertical acceleration of the top particles are larger then those of toe, so there is vibration amplification effect at the top of the slope. The slope crest displacement changes slightly decrease when the slope height reaches a certain degree. The attenuation effect of blast-induced seismic wave and the amplification effect of slope exist at the same time. This study can be used as a reference in hazard control of explosion-induced vibration for the structures on the slope.

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Numerical simulation and experimental validation of the dynamic response of aluminum plates under free air explosions

Cited by 72 publications

References 30 publications

Minimum mesh design criteria for blast wave development and structural response - MMALE method

Minimum mesh design criteria for blast wave development and structural response - MMALE method

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

Numerical Analysis of the Dynamic Response of Slope under the Blasting Vibration Effect

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