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Experimental and numerical validation of a simplified rigid torso surrogate used for investigating the fluid-structure interaction of air blast waves

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dc.contributor.author Pandelani, Thanyani A
dc.contributor.author Schutte, Zelldra
dc.contributor.author Wium, Elsmari
dc.date.accessioned 2018-11-06T10:24:22Z
dc.date.available 2018-11-06T10:24:22Z
dc.date.issued 2018-09
dc.identifier.citation Pandelani, T.A., Schutte, Z. and Wium, E. 2018. Experimental and numerical validation of a simplified rigid torso surrogate used for investigating the fluid-structure interaction of air blast waves. Eleventh South African Conference on Computational and Applied Mechanics (SACAM 2018), Vanderbijlpark, South Africa, 17-19 September 2018 en_US
dc.identifier.uri https://www.vut.ac.za/sacam2018/#1502791011790-fdff0ba6-6d10
dc.identifier.uri http://hdl.handle.net/10204/10514
dc.description Paper delivered at the Eleventh South African Conference on Computational and Applied Mechanics (SACAM 2018), Vanderbijlpark, South Africa, 17-19 September 2018 en_US
dc.description.abstract Blast waves from landmines and Improvised Explosive Devices (IEDs) produce an almost instantaneous rise in pressure which causes Primary Blast Injuries (PBI). The primary blast injuries are caused directly by the blast wave and encompasses injury to air containing organs such as the lung, ear, and bowel. The most notable primary injury is the blast lung, which is a contusion of lungs in which blood contaminates the alveoli leading to death. The PBI criteria are specified in test standards to relate pressure measurements in a testing environment to a risk of PBI. This study examines the adequacy of using a torso surrogate to measuring pressure profiles both experimentally and numerically. A simplified rigid human torso surrogate, referred to as the Blast Test Device (BTD), was manufactured and tested. The BTD comprises a high-density polyethylene (HDPE) cylinder with an outer diameter of 300 mm, height of 802 mm and wall thickness of 20 mm. The BTD was exposed to complex blast waves in free-field conditions, which were created by detonating 300 g Plastic Explosive (PE4) at three different heights above ground over a smooth, concrete surface. The experimental results were compared to the numerical results as well as results available in literature. The experimental results were compared with respect to incident pressures, reflected pressures and positive phase duration of the blast wave. Morphological correlation was observed between the experimental and literature results, however time delays for initial peaks were observed in three of the comparisons. The numerical predictions also compared well morphologically, but with time delays observed for side-on pressures, as well as differences in initial peak pressures. en_US
dc.language.iso en en_US
dc.relation.ispartofseries Worklist;21508
dc.subject Fluid-structure interaction en_US
dc.subject IEDs en_US
dc.subject Primary blast injury en_US
dc.subject Overpressure en_US
dc.subject Injury criteria en_US
dc.subject Blast Test Device en_US
dc.subject BTD en_US
dc.subject Torso en_US
dc.title Experimental and numerical validation of a simplified rigid torso surrogate used for investigating the fluid-structure interaction of air blast waves en_US
dc.type Conference Presentation en_US
dc.identifier.apacitation Pandelani, T. A., Schutte, Z., & Wium, E. (2018). Experimental and numerical validation of a simplified rigid torso surrogate used for investigating the fluid-structure interaction of air blast waves. http://hdl.handle.net/10204/10514 en_ZA
dc.identifier.chicagocitation Pandelani, Thanyani A, Zelldra Schutte, and Elsmari Wium. "Experimental and numerical validation of a simplified rigid torso surrogate used for investigating the fluid-structure interaction of air blast waves." (2018): http://hdl.handle.net/10204/10514 en_ZA
dc.identifier.vancouvercitation Pandelani TA, Schutte Z, Wium E, Experimental and numerical validation of a simplified rigid torso surrogate used for investigating the fluid-structure interaction of air blast waves; 2018. http://hdl.handle.net/10204/10514 . en_ZA
dc.identifier.ris TY - Conference Presentation AU - Pandelani, Thanyani A AU - Schutte, Zelldra AU - Wium, Elsmari AB - Blast waves from landmines and Improvised Explosive Devices (IEDs) produce an almost instantaneous rise in pressure which causes Primary Blast Injuries (PBI). The primary blast injuries are caused directly by the blast wave and encompasses injury to air containing organs such as the lung, ear, and bowel. The most notable primary injury is the blast lung, which is a contusion of lungs in which blood contaminates the alveoli leading to death. The PBI criteria are specified in test standards to relate pressure measurements in a testing environment to a risk of PBI. This study examines the adequacy of using a torso surrogate to measuring pressure profiles both experimentally and numerically. A simplified rigid human torso surrogate, referred to as the Blast Test Device (BTD), was manufactured and tested. The BTD comprises a high-density polyethylene (HDPE) cylinder with an outer diameter of 300 mm, height of 802 mm and wall thickness of 20 mm. The BTD was exposed to complex blast waves in free-field conditions, which were created by detonating 300 g Plastic Explosive (PE4) at three different heights above ground over a smooth, concrete surface. The experimental results were compared to the numerical results as well as results available in literature. The experimental results were compared with respect to incident pressures, reflected pressures and positive phase duration of the blast wave. Morphological correlation was observed between the experimental and literature results, however time delays for initial peaks were observed in three of the comparisons. The numerical predictions also compared well morphologically, but with time delays observed for side-on pressures, as well as differences in initial peak pressures. DA - 2018-09 DB - ResearchSpace DP - CSIR KW - Fluid-structure interaction KW - IEDs KW - Primary blast injury KW - Overpressure KW - Injury criteria KW - Blast Test Device KW - BTD KW - Torso LK - https://researchspace.csir.co.za PY - 2018 T1 - Experimental and numerical validation of a simplified rigid torso surrogate used for investigating the fluid-structure interaction of air blast waves TI - Experimental and numerical validation of a simplified rigid torso surrogate used for investigating the fluid-structure interaction of air blast waves UR - http://hdl.handle.net/10204/10514 ER - en_ZA


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