Dynamic tests of optical glass material and bird impact

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Journal of Vibration and Shock ›› 2021, Vol. 40 ›› Issue (7) : 216-221.

WANG Jinjin1, LI Zhigang1, YANG Haifeng1, LIU Fu2

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Abstract

Here, the bird impact problem of multispectral zinc sulfide (ZnS) optical glass material used in aircraft was investigated. Firstly, dynamic compressive tests were conducted on multispectral ZnS glass at high-medium strain rate to obtain its material properties. Secondly, a bird body was modeled using the smoothed particle hydrodynamics (SPH) method, and Gruneisen state equation was introduced to define the bird body constitutive model. The established bird body model impacting aluminum plate was simulated and verified with tests. The verification results showed that the established bird body model has higher accuracy and can be used for simulation in other impact cases. Finally, a model of bird impact glass plate was established to predict the anti-bird impact performance of multispectral ZnS glass. Simulation results showed that the ultimate strain and failure of ZnS glass are easy to reach at impact position and place of edge constraint; contact force peak value of glass surface decreases with decrease in bird impact angle; the study results can provide a reference for numerical simulation of the bird body SPH method and application of multispectral ZnS glass in aircraft.

Key words

multispectral zinc sulfide (ZnS) / bird impact / smoothed particle hydrodynamics (SPH) method / numerical simulation / test

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WANG Jinjin1, LI Zhigang1, YANG Haifeng1, LIU Fu2. Dynamic tests of optical glass material and bird impact[J]. Journal of Vibration and Shock, 2021, 40(7): 216-221

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