نتایج جستجو برای: blast wave
تعداد نتایج: 238957 فیلتر نتایج به سال:
The main focus of this study was the effect of a full blast wave on lightweight nonstructural components, such as window glazing. Both the positive and negative phases of the blast pulse were considered. Previously, structural analysis models considered only the positive phase of the blast load. The structural response is defined by the peak positive and negative values of the pressure, the dur...
Primary blast injury affects the gas-containing structures of the body. Damage to the lungs with resultant respiratory insufficiency and arterial embolization of air from alveolar pulmonary venous fistulae is the predominant cause of morbidity and mortality following high-level blast exposure. In an effort to generate a widely applicable damage-risk criterion for thoracic injury from blast we a...
Exposure to blast events can cause severe trauma to vital organs such as the lungs, ears, and brain. Understanding the mechanisms behind such blast-induced injuries is of great importance considering the recent trend towards the use of explosives in modern warfare and terrorist-related incidents. To fully understand blast-induced injury, we must first be able to replicate such blast events in a...
It is a common point that “soft” condensed matter (like granular materials or foams) can reduce damage caused by impact or explosion. It is attributed to their ability to absorb significant energy. This is certainly the case for quasistatic type of deformation at low velocity of impact widely used for packing of fragile devices. At the same time a mitigation of blast phenomena must take into ac...
The expense, danger, planning and precision required to create explosions suggests that the computational visual modelling of explosions is worthwhile. However, the short time scale at which explosions occur, and their sheer complexity, poses a difficult modelling challenge. After describing the basic phenomenology of explosion events, we present an efficient computational model of isotropic bl...
Explosions generate extreme forces and pressures They cause massive displacement deformation and breakage of nearby objects The chief damage mechanism of high ex plosives is the blast wave which they generate A practical theory of explosives blast waves and blast loading of structures is presented This is used to develop a simpli ed visual model of explosions for use in computer graphics A heur...
Abstract Aims A computer simulation to show the effects of an explosive device's blast wave and shrapnel injuries humans. Methods Unity 3D project written in C# with real time physics showing on people listing probable sustained. Results An mass 0.1kg 100kg PTEN can be simulated evolving up 100,000 particles. The maximum overpressure, velocity shock front temperature Video: https://youtu.be/ICH...
BACKGROUND AND OBJECTIVE Blast lung injury is a common type of blast injury and has very high mortality. Therefore, research to identify medical therapies for blast injury is important. Perfluorocarbon (PFC) is used to improve gas exchange in diseased lungs and has anti-inflammatory functions in vitro and in vivo. The aim of this study was to determine whether PFC reduces damage to A549 cells c...
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