A Manual for the Prediction of Blast and Fragment Loadings on Structures

Baker, W. E.; Kulesz, James J.; Westine, Peter S.; Cox, Phineas Alexander; Wilbeck, James S.

doi:10.21236/ada396118

Cited by 77 publications

(106 citation statements)

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“…The SDOF system is therefore a good model of the dynamics of the real system and allows non-linear behaviour to be modelled. Further details of the method and calculation of the equivalent springmass properties can be found in Biggs [11] and Baker et al [12].…”

Section: Sdof Modellingmentioning

confidence: 99%

Modelling the response of UHPFRC panels to explosive loading

Schleyer¹,

Barnett²,

Millard³

et al. 2010

WIT Transactions on the Built Environment

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Explosive testing of full-size fibre-reinforced concrete panels was conducted at GL Industrial Services at Spadeadam test site, Cumbria, England in 2008. The panels were manufactured by VSL Australia and shipped to Spadeadam for testing. This paper reports these tests and a simplified analysis of the response of the panels. Each panel measured 3.5m by 1.3m by 100mm thick. The panels were contained within a large concrete enclosure to minimise clearing around the sides from the blast wave and placed between 7m and 12m from a 100 kg TNT equivalent explosive charge. Two of the panels were fabricated with different levels of steel fibre dosage. The remaining two panels were fabricated with steel fibres together with supplementary steel bar reinforcement. Numerical computer modelling was carried out using the Autodyn package to predict the behaviour of the four panels before testing. Based on the predictive modelling, each panel was placed a suitable distance from the explosive charge so as to cause permanent damage but not total structural collapse. The maximum flexural tensile strain rate evaluated on the back face of the panel was in the region of 1.0s -1 . Simplified modelling of the panels was also carried out using a singledegree-of-freedom representation together with a resistance-deflection relationship that took account of characteristic brittle cracking and ductile softening behaviour following ultimate capacity. An outline of the method with results is given in the paper.

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Section: Sdof Modellingmentioning

confidence: 99%

Modelling the response of UHPFRC panels to explosive loading

Schleyer¹,

Barnett²,

Millard³

et al. 2010

WIT Transactions on the Built Environment

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“…Moreover, the ratio of the positive duration t + of the pressure pulse and the natural period of vibration T n for the target plate may be used to characterize the loading (see e.g. [11]) as one 01015-p.4 DYMAT 2015 of the following domains, i.e.…”

Section: Shock Tube Performancementioning

confidence: 99%

Behaviour of plated structures subjected to blast loading

Aune

Langseth

2015

EPJ Web of Conferences

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Abstract. An experimental investigation using a new shock tube facility to study blast-load effects on thin aluminium plates is presented. The shock tube is designed to expose materials and structures to extreme loading conditions, such as accidental explosions or terrorist attacks. The intensity of the loading in the present study was determined by the initial conditions of the compressed gas, i.e. volume and pressure, and the resulting loading on the target plate was compared to experimental data from explosive detonations found in the literature. The square plates were manufactured from a low-strength aluminium alloy and had an exposed area of 0.3 × 0.3 m 2 . Piezoelectric pressure sensors were used for pressure recordings and synchronized with two high-speed cameras operating at a frame rate of 21,000 fps in a stereoscopic setup to capture the dynamic response using a threedimensional digital image correlation (3D-DIC) technique. The experiment showed that the shock tube is capable of recreating a loading similar to that of an unconfined far-field airblast, and worked as an easily controllable alternative to explosive detonations when studying the dynamic response of structures subjected to blast loading.

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“…The slope of the pressure-time function can be adapted with the form parameter b, which can be taken from Baker et al [18]. All parameters of Equation (2) can be taken from several diagrams and equations (e.g.…”

Section: Experimental Analytical and Numerical Datamentioning

confidence: 99%

Explosions in Complex Geometries — A Comparison of Several Approaches

Larcher

Casadei

2010

International Journal of Protective Structures

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The mission of the JRC-IPSC is to provide research results and to support EU policy-makers in their effort towards global security and towards protection of European citizens from accidents, deliberate attacks, fraud and illegal actions against EU policies. Legal NoticeNeither the European Commission nor any person acting on behalf of the Commission is responsible for the use which might be made of this publication. Europe Direct is a service to help you find answers to your questions about the European UnionFreephone number (*): 00 800 6 7 8 9 10 11 (*) Certain mobile telephone operators do not allow access to 00 800 numbers or these calls may be billed.A great deal of additional information on the European Union is available on the Internet. Reproduction is authorised provided the source is acknowledged Printed in ItalyExplosions in complex geometries -a comparison of several approaches Martin Larcher, Folco Casadei AbstractFor the design and calculation of structures loaded by air blast waves, especially from inside the structure, assumptions on the applied load are needed. This paper presents several simulation methods for the air blast loading of structures and their ability to be used for complex geometries. Experimental-analytical pressure-time functions of spherical load conditions applied to the structure by disregarding the air are not applicable in such cases because they do not account for reflections, shadowing and channelling effects. Fluid calculations, which model also the solid explosive, are very expensive due to the extremely small elements for the explosive and the air nearby.This paper therefore presents a review of a well-known simulation method, which uses a balloon with compressed air instead of the explosive. A procedure is developed which makes it possible to determine the overpressure of such a balloon for a given size of the explosive more accurately than before. The pressure-time function and the impulse-distance function of calculations using this method show good correspondence with experimental-analytical data. The functioning of the method is verified against experimental results.

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A Manual for the Prediction of Blast and Fragment Loadings on Structures

Cited by 77 publications

References 0 publications

Modelling the response of UHPFRC panels to explosive loading

Modelling the response of UHPFRC panels to explosive loading

Behaviour of plated structures subjected to blast loading

Explosions in Complex Geometries — A Comparison of Several Approaches

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