Structural damage analysis and experimental study of aviation structure under tire blasting jet load

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Journal of Vibration and Shock ›› 2023, Vol. 42 ›› Issue (8) : 334-340.

ZHOU Changwei, ZHANG Lijuan, ZHANG Chenlizi

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Abstract

In flight, the tire burst of the retracted landing gear is caused by previous tire damage, which may occur anywhere on the exposed surface of the tire.In order to study the influence of tire blasting jet load on aircraft structure in the cabin, an engineering fitting method was adopted to reflect the instantaneous air field pressure distribution, and an engineering calculation model was established.Using this calculation model, the dynamic response process of typical large-size structures under instantaneous jet load was observed, and the structural damage was obtained. It was shown that the elastic deformation of the structure near the blasting point is very large, and the structure with the highest stiffness (such as edge strip) is the dangerous part；tire blasting in cabin causes more severe damage to structure；the computed results with the proposed model agree well with the test data，so the calculation model can correctly predict the pressure field distribution of jet load and the dynamic response process of the structure.This method can provide a reliable means for anti-tire blasting impact design and damage analysis of aviation structures.

Key words

tire blasting / jet load / impact dynamics

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ZHOU Changwei, ZHANG Lijuan, ZHANG Chenlizi. Structural damage analysis and experimental study of aviation structure under tire blasting jet load[J]. Journal of Vibration and Shock, 2023, 42(8): 334-340

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