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Title: INFLUENCE OF A BIRD MODEL SHAPE ON THE THICKNESS OF A HELICOPTER WINDSHIELD DURING A BIRD STRIKE NUMERICAL ANALYSIS
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INFLUENCE OF A BIRD MODEL SHAPE ON THE THICKNESS OF A HELICOPTER WINDSHIELD DURING A BIRD STRIKE NUMERICAL ANALYSIS
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1314-2704
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English
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21
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The aim of this paper is to present results of numerical analysis of a bird model impact with a helicopter windshield. It appears that the research findings which take into consideration the bird?s shape differ from those using a simplified bird model in the shape of a cylinder or a sphere. Overall, at higher speeds the windshield becomes pierced and its damage process occurs in a different manner. In order to conduct an analysis of a bird impact onto an aircraft windshield, we used the LS_DYNA software package. An interesting comparative analysis might be checking whether applying the multimaterial bird model affects velocity at which the windshield becomes shattered. In the classic variant with the 3.6 kg bird model, cylinder-shaped with spherical endings, the windshield became damaged at the velocity of 200 km/h for a standard windshield (3.81 mm). For the same velocity, we conducted simulation which used the multimaterial model. It appeared that the windshield did not become damaged. Therefore, the shape of the dummy bird also affects the velocity at which the damage occurs. Too wide simplification of the dummy bird shape may lead to lowered values of the velocity.
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conference
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17th International Multidisciplinary Scientific GeoConference SGEM 2017
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17th International Multidisciplinary Scientific GeoConference SGEM 2017, 29 June - 5 July, 2017
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Proceedings Paper
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STEF92 Technology
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International Multidisciplinary Scientific GeoConference-SGEM
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Bulgarian Acad Sci; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci & Arts; Slovak Acad Sci; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; World Acad Sci; European Acad Sci, Arts & Letters; Ac
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367-376
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29 June - 5 July, 2017
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website
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cdrom
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2975
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bird strikes; multilateral model; numerical simulation
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