Development of a prediction model using fully connected neural networks in the analysis of composite structures under bird strike

Hasılcı, Zehra; Boğoçlu, Muharrem Erdem; Dalkılıç, Ahmet Selim; Kayran, Altan

doi:10.1007/s12206-022-0119-5

Cited by 3 publications

(1 citation statement)

References 22 publications

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“…Nimmer [6] obtained the triangular bird impact load waveform; Saeed [7] found that the coupled Eulerian Lagrangian method can also simulate the high-speed flying birds; Anghileri [8] found that when using particle flow to simulate bird body, the results obtained have a certain relationship with the density of particle flow, and dense particle flow is more conducive to the simulation of bird body. In addition, Haslc [9] also used the fully connected neural network to estimate the overall deformation of bird impact of laminated plates, and the results are also close to the actual situation.…”

Section: Introductionmentioning

confidence: 68%

Study on bird impact response of windshield glass of all general aviation aircraft

Wang¹,

Hua²,

Gai³

et al. 2022

HSET

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With the improvement of aircraft flight speed, bird impact is easy to cause serious accidents such as windshield breakdown, aircraft destruction and human death. In order to improve the bird impact resistance of aircraft windshield glass, the dynamic response of windshield glass (YB-3 plexiglass) after bird impact of small general-purpose aircraft flying at cruise speed was studied. By establishing the bird impact windshield glass model and adopting the fixed restraint mode around, the windshield glass is impacted at the speeds of 200km/h, 220km/h and 250km/h and the angles of 30°, 60° and 90°, respectively. The changes of stress-strain, displacement and energy absorption of the windshield glass under the impact of bird body, as well as the effects of different impact speeds and impact angles on the dynamic response of the glass are analyzed. It is found that during the whole impact process, the stress and strain of YB-3 plexiglass will reach the peak in a short time, then oscillate back and forth in a period of time, and the final residual deformation is small. With the increase of impact velocity, the stress, strain and displacement of glass will increase accordingly; With the increase of the impact angle, the energy absorbed by the windshield glass decreases accordingly, and the damage and deformation around the impact point are reduced. By studying the bird impact of the windshield of small general-purpose aircraft, it provides a theoretical basis for the airworthiness certification of general-purpose aircraft and the design optimization of windshield glass.

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