• Document: Simulation of the Effects of an Air Blast Wave
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Simulation of the Effects of an Air Blast Wave Martin Larcher a) t=2e-5 b) t=6e-5 c) t=1e-4 d) t=1.4e-4 PUBSY JRC41337 - 2007 The Institute for the Protection and Security of the Citizen provides researchbased, systems- oriented support to EU policies so as to protect the citizen against economic and technological risk. The Institute maintains and develops its expertise and networks in information, communication, space and engineering technologies in support of its mission. The strong crossfertilisation between its nuclear and non-nuclear activities strengthens the expertise it can bring to the benefit of customers in both domains. European Commission Joint Research Centre Institute for the Protection and Security of the Citizen Contact information Address: Martin Larcher, T.P. 480, Joint Research Centre, I-21020 Ispra, ITALY E-mail: martin.larcher@jrc.it Tel.: +390332789004 Fax: +390332789049 http://ipsc.jrc.ec.europa.eu http://www.jrc.ec.europa.eu Legal Notice Neither the European Commission nor any person acting on behalf of the Commission is responsible for the use which might be made of this publication. A great deal of additional information on the European Union is available on the Internet. It can be accessed through the Europa server http://europa.eu/ JRC 41337 ISSN 1018-5593 Luxembourg: Office for Official Publications of the European Communities © European Communities, 2007 Reproduction is authorised provided the source is acknowledged Printed in Italy Distribution List Lechner S. Anthoine A. Casadei F. Dyngeland T. Géradin M. Giannopoulos G. Gutierrez E. Halleux J.P. Larcher M. Paffumi E. (JRC Petten) Pegon P. Solomos G. DG Tran External: Mr. Bung H. (CEA) Faucher V. (CEA) Galon P. (CEA) Kill N. (Samtech) Cheruet A. (Samtech) Potapov S. (EDF) S. Lechner The information contained in this document may not be disseminated, copied or utilized without the written authorization of the Commission. The Commission reserves specifically its rights to apply for patents or to obtain other protection for the matter open to intellectual or industrial protection. CONTENTS 1 Introduction ...................................................................................................................................5 2 Air Blast Waves.............................................................................................................................6 2.1 Introduction ..........................................................................................................................6 2.1.1 Detonations ......................................................................................................................6 2.1.2 Air Blast Waves ...............................................................................................................7 2.2 Literature Data .....................................................................................................................8 2.2.1 Pressure-Time Distribution ..............................................................................................8 2.2.2 Maximum / Minimum Pressure .....................................................................................10 2.2.3 Impulse...........................................................................................................................11 2.2.4 Negative Phase ...............................................................................................................11 2.2.5 Wave Form Parameter ...................................................................................................13 2.2.6 Shock Front Velocity .....................................................................................................16 2.2.7 Specific Heat Ratio ........................................................................................................16 3 Numerical Loading of a Structure with Air Blast Waves............................................................18 4 Investigations with Explosives as a Charge (Solid TNT) ...........................................................20 4.1 Modelling of the explosive ................................................................................................20 4.2 Behaviour in the Explosive ................................................................................................24 4.3 Cone with two Symmetry Axes .........................................................................................29 4.4 Cubic Charge with two Symmetry Axes............................................................................38 4.5 Spherical

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