It is becoming increasingly obvious that helicopters play significant roles in transportation, medical rescue, aerial detection, and so on. Nowadays, helicopters are widely used in military and civil fields owing to its unique vertical take-off and landing properties, excellent hover performance and low-speed characteristics. The results indicated that the corner of the fuel tank is the most vulnerable location during the impact with ground.
The influences of the impact velocity, the impact angle, the thickness of the fuel tank wall and the volume fraction of water on the dynamic responses of the dropped fuel tank were studied. Good agreement was achieved between the experimental and numerical results of the impact force with the ground. The drop impact tests were conducted to validate the accuracy of the numerical simulation. A fluid–structure interaction finite element model of the fuel tank based on the arbitrary Lagrangian–Eulerian method was constructed to elucidate the dynamic failure behavior. In order to understand and improve the crashworthiness of the soft fuel tank of helicopter during the crash, this paper investigated the dynamic behavior of the nylon woven fabric composite fuel tank striking on the ground. The crashworthiness of helicopter fuel tank is vital to the survivability of the passengers and structures.
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