نتایج جستجو برای: blast wave

تعداد نتایج: 238957  

2016
Wen Peng Zhaoyan Zhang George Gogos

Explosions occur in military conflicts as well as in various industrial applications. Air blast waves generated by large explosions move outward with high velocity, pressure and temperature. The blast waves not only incapacitate military and civilian personnel, but also damages buildings, vehicles, and other properties. Hence, there has been extensive research on how to mitigate blast wave effe...

Journal: :Medical hypotheses 2009
A C Courtney M W Courtney

The mechanisms by which blast pressure waves cause mild-to-moderate traumatic brain injury (mTBI) are an open question. Possibilities include acceleration of the head, direct passage of the blast wave via the cranium, and propagation of the blast wave to the brain via a thoracic mechanism. The hypothesis that the blast pressure wave reaches the brain via a thoracic mechanism is considered in li...

2008
IG Cullis

The paper defines and describes blast waves, their interaction with a structure and its subsequent response. Explosions generate blast waves, which need not be due to explosives. A blast wave consists of two parts: a shock wave and a blast wind. The paper explains how shock waves are formed and their basic properties.The physics of blast waves is non-linear and therefore non-intuitive. To under...

2008

The paper defines and describes blast waves, their interaction with a structure and its subsequent response. Explosions generate blast waves, which need not be due to explosives. A blast wave consists of two parts: a shock wave and a blast wind. The paper explains how shock waves are formed and their basic properties.The physics of blast waves is non-linear and therefore non-intuitive. To under...

Journal: :annals of military and health science research 0
محمد حسین لشکری mohammad hossein lashkari department of surgery, aja university of medical sciences, tehran, iran.تهران عطا کوهیان ata koohian department of physics, university of tehran, tehran, iranتهران کامبیز کنگرلو kambiz kangarlou no 2, 6th st., iranzamin st., shahrak gharb district,tehran,iran.تهران، شهرک غرب، خیابان ایران زمین، خیابان ششم، پلاک 2

purpose: blast-induced traumatic brain injury (btbi) is one of the causes of death or permanent   invalidity which can occur unexpectedly in both military and civilian populations. this study   set out to conduct a combined eulerian-lagrangian computational analysis of the interaction   between a single planar blast wave and a human head in order to assess the extent of intracranial   shock wav...

Ata Koohian, Kambiz Kangarlou, Mohammad Hossein Lashkari,

  Purpose: Blast-induced traumatic brain injury (bTBI) is one of the causes of death or permanent   invalidity which can occur unexpectedly in both military and civilian populations. This study   set out to conduct a combined Eulerian-Lagrangian computational analysis of the interaction   between a single planar blast wave and a human head in order to assess the extent of intracranial   shock w...

1998
James R. Graham Matthew J. Richter

We present a complete atlas of the Cygnus Loop supernova remnant in the light of [O III] (λ5007), Hα, and [S II] (λλ6717, 6731). We include low-resolution (25) global maps and smaller fields at 6 resolution from observations using the Prime Focus Corrector on the 0.8-m telescope at McDonald Observatory. Despite its shell-like appearance, the Cygnus Loop is not a current example of a Sedov-Taylo...

2004
A. D. Edens M. J. Edwards R. G. Adams P. Rambo L. Ruggles I. C. Smith J. L. Porter

The study of blast waves produced by intense lasers in gases is motivated by the desire to explore astrophysically relevant hydrodynamic phenomena in the laboratory. A systematic scan of laser produced blast waves was performed and the structure of blast waves was examined over a wide range of drive laser energy. Lasers with energies ranging from 10–1000 J illuminated a pin target in either xen...

2012
Thao D. Nguyen Kaliat T. Ramesh Oliver Schein Rajneesh Bhardwaj

Ocular injuries from blast have increased in recent wars, but the injury mechanism associated with the primary blast wave is unknown. We employ a three-dimensional fluid-structure interaction computational model to understand the stresses and deformations incurred by the globe due to blast overpressure. Our numerical results demonstrate that the blast wave reflections off the facial features ar...

Journal: :مهندسی عمران فردوسی 0
احمد فراهانی محمدعلی هادیان فر

in the conditions in which terrorist attacks on facilities and civilian places increase more and more attention to design of structures against impact loads of explosion is more important and needs special considerations. study of nature of blast loads and methods of applying it on the structure is one of the important problems. explosion is a sudden and rapid release of a great amount of energ...

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