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Relevant bibliographies by topics / Air blast propagation

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Journal articles

Academic literature on the topic 'Air blast propagation'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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Journal articles on the topic "Air blast propagation"

1

DENG, RONG-BING, and XIAN-LONG JIN. "THREE-DIMENSIONAL SIMULATION OF CONDENSED EXPLOSIVE-INDUCED FLOW PROPAGATION AND INTERACTION WITH GLASS CURTAIN WALL." Modern Physics Letters B 24, no. 09 (2010): 833–48. http://dx.doi.org/10.1142/s0217984910022895.

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In order to carry out blast response of curtain wall, the first step is to understand the complex flow of the air blasts around the structures and predict the blast loads acting on the structures. But in earlier studies related to blast resistant design of glass curtain wall, blast flow induced by condensed explosive is not taken into account due to expensively computational resources required. Based on high performance computing, this paper presents a new three-dimensional numerical simulation method of condensed explosive-induced flow propagation and impact on a complex glass curtain wall, where the fluid is represented by solving Navier–Stokes equations with a multimaterial arbitrary Lagrangian–Eulerian (ALE) formulation. In particular, the whole analytical model consists of condensed explosive, air, detailed curtain wall system, and ground, which comprehensively represents the real fluid–structure interaction environment. Final calculation has been performed on the Dawning 4000A supercomputer based on the domain decomposition method. The flow mechanisms of blast wave rounding curtain wall is visualized and the simulated pressure history of gauge is in good agreement with the experimental result which validates this method. The present method is shown to be a useful tool for blast resistance design of curtain wall in the future.

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2

Ashratov, �. A., U. G. Pirumov, and V. V. Surkov. "Blast wave propagation in air from a gaseous charge." Fluid Dynamics 21, no. 3 (1986): 431–37. http://dx.doi.org/10.1007/bf01409730.

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3

Liang, Minzu, Xiangyu Li, Yuliang Lin, and Fangyun Lu. "Compaction Wave Propagation in Layered Cellular Materials Under Air-Blast." International Journal of Applied Mechanics 11, no. 01 (2019): 1950003. http://dx.doi.org/10.1142/s1758825119500030.

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The propagation of compaction waves in layered cellular material subjected to air-blast is analyzed to examine the mechanism of compaction wave and reveal the phenomena that develop at the interface between the cellular layers. Similar to the previous studies of cellular materials under dynamic loading, the topology of cellular materials is neglected and homogeneous properties are assumed. The rigid-perfectly plastic-locking (R-PP-L) material idealization and the simple shock theory are employed to analyze the compaction situations. Analytical solutions for compaction wave propagation of double-layer cellular materials with two gradient-arrangements under air-blast loading have been worked out. The densification wave occurs at the blast end and then gradually propagates to the distal end for layers’ densities increase in the propagation direction (positive gradient). While compaction waves simultaneously form in both layers and propagate to the distal end in the same direction for the negative gradient. The finite element (FE) models using the Voronoi technique are carried out with practical aluminum foam to verify the predictions of the theoretical analysis. The potential of layered cellular materials to design efficient structural components under air-blast load is discussed, which would outperform their corresponding single counterpart with equal mass.

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4

Zhang, Xiu Hua, and Yan Yan Wu. "Numerical Analysis of Shock Wave Propagation Law of Internal Gas Explosion." Applied Mechanics and Materials 105-107 (September 2011): 299–302. http://dx.doi.org/10.4028/www.scientific.net/amm.105-107.299.

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The purpose of this paper is to research on shock wave propagation law of internal gas explosion. The multi-material Eulerian and Lagrangian coupling algorithm was adopt. Using ANSYS/LS-DYNA dynamic analysis software to build frame structure, air and gas explosion models. Multiple ALE elements for simulating air and gas explosion material the analysis of blast shock wave propagation in a three-story steel frame structure and the characteristics of explosion pressure using fluid-structure coupling method are carried out. The conclusions show that fluid-structure coupling method can well simulated shock wave propagation of internal gas explosion, and the pressure peak of blast shock wave increased with the increasing of the blast air initial energy. Locality is the characteristic of explosion pressure in sealed space, and the pressure pass weakly when it propagates in solid.

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5

Akhlaghi, Ebrahim. "Numerical Simulation of Air Shock Wave Propagation Effects in Reinforced Concrete Columns." Journal of Modeling and Optimization 12, no. 1 (2020): 12–22. http://dx.doi.org/10.32732/jmo.2020.12.1.12.

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Reinforced concrete has been shown to be a desirable material of choice in blast resistant structures due to its availability, relatively low cost, and its inherent ability to absorb energy produced by explosions. Most research work investigating the behaviour of reinforced concrete columns to blast loading have concentrated on their response to planar loading from far-field explosions. Limited amount of work is available on the effects of near-field explosion on the behaviour of reinforced concrete columns. This study is aimed to investigate effects of explosive loads on RC column by using ALE method. Commercial finite element package, LS-DYNA is used to simulate the behavior of blast wave on RC columns. Numerical simulation is validated against experimental work done in literature. The experience gained from this research provides valuable information for the development of the finite element modeling of real blast load effects on RC columns.

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6

Dharma Rao, Vedula, Adapaka Srinivas Kumar, Kadiyam Venkateswara Rao, and Veerapaneni S. R. Krishna Prasad. "Theoretical and Experimental Studies on Blast Wave Propagation in Air." Propellants, Explosives, Pyrotechnics 40, no. 1 (2014): 138–43. http://dx.doi.org/10.1002/prep.201400042.

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7

Bayle, P., M. Bayle, and G. Forn. "Blast wave propagation in glow to spark transition in air." Journal of Physics D: Applied Physics 18, no. 12 (1985): 2417–32. http://dx.doi.org/10.1088/0022-3727/18/12/011.

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8

Mazepa, E. E., P. I. Kusainov, A. Yu Krainov, and O. Yu Lukashov. "Modeling the propagation of air blast waves in mine workings." Journal of Physics: Conference Series 1749 (January 2021): 012041. http://dx.doi.org/10.1088/1742-6596/1749/1/012041.

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9

Draganić, Hrvoje, and Damir Varevac. "Analysis of Blast Wave Parameters Depending on Air Mesh Size." Shock and Vibration 2018 (July 8, 2018): 1–18. http://dx.doi.org/10.1155/2018/3157457.

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Results of numerical simulations of explosion events greatly depend on the mesh size. Since these simulations demand large amounts of processing time, it is necessary to identify an optimal mesh size that will speed up the calculation and give adequate results. To obtain optimal mesh sizes for further large-scale numerical simulations of blast wave interactions with overpasses, mesh size convergence tests were conducted for incident and reflected blast waves for close range bursts (up to 5 m). Ansys Autodyn hydrocode software was used for blast modelling in axisymmetric environment for incident pressures and in a 3D environment for reflected pressures. In the axisymmetric environment only the blast wave propagation through the air was considered, and in 3D environment blast wave interaction and reflection of a rigid surface were considered. Analysis showed that numerical results greatly depend on the mesh size and Richardson extrapolation was used for extrapolating optimal mesh size for considered blast scenarios.

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10

Sembian, S., M. Liverts, and N. Apazidis. "Plane blast wave propagation in air with a transverse thermal inhomogeneity." European Journal of Mechanics - B/Fluids 67 (January 2018): 220–30. http://dx.doi.org/10.1016/j.euromechflu.2017.09.011.

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