Study of the effect of bird strikes from various orientations based on a realistic bird
ZHANG Da-hai1, 2, FEI Qing-guo1, 2, LIU Hong-yue1, 2
1. Department of Engineering Mechanics, Southeast University, Nanjing 210096, China;
2. Jiangsu Key Laboratory of Engineering Mechanics, Nanjing 210096, China
Abstract：Bird shape and strike orientation are two vitally important factors that can affect the accuracy of bird strike analysis. The realistic bird has a complex configuration and there are different bird types with different body shapes, so researchers have often used simple configurations to model the bird in bird strike event. The four substitute bird models most-frequently employed in the literature are: sphere, straight-ended cylinder, hemispherical-ended cylinder and ellipsoid. During a bird strike event, a bird can strike the airplane from its head, tail, abdomen or wings. Any of these orientations have different effects on the response of an airplane part. Firstly, a realistic bird model was established to study the effect of strike orientation. The results obtained by using the substitute bird models are compared in order to determine the best substitute bird witch can properly model the force exerted by real bird when striking from different orientations. It was concluded that the configuration of the bird has a big influence on the impact force; the impact force obtained by striking from the abdomen side is the largest and the shortest while the results obtained by striking from the head and tail sides are the least. Meanwhile, the kinetic energy loss of bird tends to be adequate and rapid by striking from the abdomen, wing and tail come second, head is the least. Besides, it was also found that for the tail side strike scenario, a hemispherical-ended cylinder shows the best results and for the abdomen side strike scenario, an ellipsoid striking from its long side can be the best substitute model, while for the head and wing side strike scenarios, no substitute models have a good agreement.
收稿日期: 2014-07-22
出版日期: 2015-11-25
引用本文:
张大海1,2，费庆国1,2，刘宏月1,2. 基于真实形状鸟体的撞击方向对鸟撞分析影响研究[J]. 振动与冲击, 2015, 34(22): 103-108.
ZHANG Da-hai1, 2, FEI Qing-guo1, 2, LIU Hong-yue1, 2. Study of the effect of bird strikes from various orientations based on a realistic bird. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(22): 103-108.
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