Searched for: subject%3A%22Blast%22
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van der Voort, M.M. (author), van Wees, R.M.M. (author), Brouwer, S.D. (author), van der Jagt-Deutekom, M.J. (author), Verreault, J. (author)
Forensic analysis of explosions consists of determining the point of origin, the explosive substance involved, and the charge mass. Within the EU FP7 project Hyperion, TNO developed the Inverse Explosion Analysis (TNO-IEA) tool to estimate the charge mass and point of origin based on observed damage around an explosion. In this paper inverse...
conference paper 2015
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Verreault, J. (author), van der Voort, M.M. (author)
Multi-layered materials with alternating impedances as a mean to mitigate sympathetic detonation is considered in this investigation by studying the wave scattering and energy absorption phenomena. This is achieved using an analytical wave-tracking model that accounts for the different wave interactions within and at the interface of each layer....
conference paper 2015
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Boonacker, B. (author), Halswijk, W.H.C. (author), Westerhof, T.A.T. (author), Eeuwhorst, T.R. (author), Verhagen, T.L.A. (author)
TNO is developing a flexible blast effects module suited to be used in simulations of MOUT scenarios within a VL simulation environment for assessing structural damage and human injuries due to blast load-ing. VL simulations should run in seconds to enable Monte Carlo simulations as well as deal with various ammunition – target engagement...
conference paper 2015
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Tyler-Street, M. (author), Leerdam, P.J. (author), Verhoeven, T. (author)
Anti-vehicle (AV) mines and Improvised Explosive Devices (IEDs) pose a major threat in recent and current missions. In the latest operational theatres of Iraq and Afghanistan they have been responsible for a significant proportion of all casualties. Understanding both the characteristics and strength of the blast loading from these devices is...
conference paper 2014
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Boonacker, B. (author), van Doormaal, J.C.A.M. (author), Weerheijm, J. (author)
Safety evaluation, risk assessment and decisions on prevention and protection measures require simple fast running methods. It is a challenge to develop a consequence analysis method that is relatively simple, but still has the ability to discern between different cases, scenarios and buildings. In the past years, TNO has participated in the FP7...
conference paper 2014
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Tyler-Street, M. (author)
Structural design methods for naval ships include environmental, operational and military load cases. One of the operational loads acting on a typical naval vessel is the muzzle blast from a gun. Simulating the muzzle blast load acting on a ship structure with CFD and ALE methods leads to large numerical models with high CPU requirements as a...
conference paper 2014
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Valcke, S.L.A. (author), Pipilikaki, P. (author), Fischer, H.R. (author), Verkuijlen, M.H.W. (author), Eck, E.R.H. (author)
Geopolymers are systems of inorganic binders that can be used for sustainable, cementless concrete and are formed by alkali activation of an aluminium–silicate precursor (often secondary resources like fly ash or slag). The type of aluminium– silicate precursor and its potential variations within one batch may influence geopolymer performance....
article 2014
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Polder, R.B. (author), Nijland, T.G. (author), de Rooij, M.R. (author), Larsen, C.K. (author), Pedersen, B. (author)
road environment in The Netherlands for nearly a century. The experience is good and structures with long service lives can be obtained, as has been shown by several field studies. This is caused by a high resistance against chloride penetration and a high electrical resistivity, demonstrated both in the field and in the laboratory. Due to the...
conference paper 2014
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van der Voort, M.M. (author), van Wees, R.M.M. (author), Ham, J.M. (author), Spruijt, M.P.N. (author), van den Berg, A.C. (author), de Bruijn, P.C.J. (author), van Ierschot, P.G.A. (author)
The need for transportation and storage of CO2 in bulk quantities is likely to increase in the near future. The handling of CO2 on such scale gives rise to a number of technological challenges and safety aspects. The accidental rupture of a vessel containing liquefied CO2 may lead to a Boiling Liquid Expanding Vapour Explosion (BLEVE). Whether...
article 2013
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van der Voort, M.M. (author), van den Berg, A.C. (author), Roekaerts, D.J.E.M. (author), Xie, M. (author), de Bruijn, P.C.J. (author)
Explosive evaporation of a superheated liquid is a relevant hazard in the process industry. A vessel rupture during storage, transport or handling may lead to devastating blast effects. In order to assess the risk associated with this hazard or to design protective measures, an accurate prediction model for the blast generated after vessel...
article 2012
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van der Eerden, F.J.M. (author), van den Berg, F.H.A. (author)
Environmental research is ongoing to predict and to mitigate the noise impact of heavy weapons or explosives. In the densely populated area of the Netherlands this is of particular interest for the Ministry of Defence as the shock waves can propagate over large distances. In this research program the mitigation of shock waves by means of a sound...
article 2012
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Teland, J.A. (author), van Doormaal, J.C.A.M. (author)
Blast waves from explosions can cause lethal injuries to humans. Development of injury criteria has been ongoing for many years, but with the main focus on free field conditions. However, with terrorist actions as a new threat, explosions in urban areas have become of much more interest. Urban areas provide a complex environment for blast wave...
conference paper 2012
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Teland, J.A. (author), van Doormaal, J.C.A.M. (author), van der Horst, M.J. (author), Svinsas, E. (author)
Models for calculating human injury from a blast wave are examined. The Axelsson BTD model is able to give injury estimates also for complex shock waves, but is difficult to use in practise since it requires input from four pressure sensors on a BTD (Blast Test Device) in the specific location. To find the injury in other places, a new...
report 2011
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Mediavilla Varas, J. (author), Philippens, M.M.G.M. (author), Meijer, S.R. (author), van den Berg, A.C. (author), Sibma, P.C. (author), van Bree, J.L.M.J. (author), de Vries, D.V.W.M. (author)
Shock tube experiments and simulations are conducted with a spherical gelatin filled skull- brain surrogate, in order to study the mechanisms leading to blast induced mild traumatic brain injury. A shock tube including sensor system is optimized to simulate realistic impro-vised explosive device blast profiles obtained from full scale field...
article 2011
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Varas, J.M. (author), Soetens, F. (author)
The effect of a blast explosion on a typical steel frame building is investigated by means of computer simulations. The simulations help to identify possible hot spots that may lead to local or global failure. The blast energy is transferred to the structure by means of the façade. In particular attention is paid to the modelling of the façade...
conference paper 2010
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Mediavilla Varas, J. (author), Philippens, M.M.G.M. (author), Meijer, S.R. (author)
The objective of this research is to understand the blast propagation into the human skull and brain causing mTBI and use this knowledge for enabling design of effective protection measures against them. A shock tube including sensor system was optimized to simulate realistic IED blast profiles obtained from full scale field tests. Shock tube...
conference paper 2010
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van der Eerden, F.J.M. (author), van der Berg, F. (author)
In the densely populated area of the Netherlands, the objective of the Netherlands Ministry of Defence is to find an optimal balance between military training and the impact on the surrounding civilian community. A special case concerns large weapons, such as artillery or demolitions, which create high-energy blast waves. These waves have a low...
conference paper 2010
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Mediavilla Varas, J. (author), Soetens, F. (author)
conference paper 2010
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van den Berg, A.C. (author), TNO Defensie en Veiligheid (author)
The availability of powerful computers these days increasingly enables the use of CFD for the numerical simulation of explosion phenomena. The BLAST software consists of a compilation of codes for the numerical simulation of the gas dynamics of explosions. Each individual code has been tailored to a specific application. After a brief...
article 2009
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Tyler Street, M. (author), Luyten, J.M. (author), TNO Defensie en Veiligheid (author)
Both the dedicated element methodology and the material model with damage have been implemented into the explicit code LSDYNA as separate user defined subroutines. The predicted failure of an bulkhead to deck weld using the dedicated element methodology is shown in Figure 5, only the innermost of the five elements (in a dedicated element group)...
conference paper 2009
Searched for: subject%3A%22Blast%22
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