Whole process simulation analysis of aircraft crash into extra-large LNG storage

GE Qing-zi1,2,WENG Da-gen2,ZHANG Rui-fu2

Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (4) : 1-7.

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PDF(2486 KB)
Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (4) : 1-7.

Whole process simulation analysis of aircraft crash into extra-large LNG storage

  • GE Qing-zi1,2,WENG Da-gen2,ZHANG Rui-fu2
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Abstract

Whole process of aircraft crash into extra-large LNG storage tank has been simulated using numerical method. The LS-DYNA program has been used to build the SPH model of F-15 aircraft considering the interaction of tank, LNG, insulating and layer. The material model and parameter has been chosen and analyzed for aircraft. Based on Riera method, the comparison between numerical load and analytical load has been made to prove the reliability and practicability of SPH model. The analysis result reveal that, the impact energy which absorbed by outer tank increases with the increase of impact angle, so vertical impact is the worst angle. The height of aircraft impact position doesn’t affect the response of tank. When the impact speed of aircraft is 215m/s, the tank will be destroyed seriously. If the speed reduces to 160m/s, the stress of inner tank material approach to maximum value, so 160m/s can be deemed to the maximum impact speed using the existing design method.

Key words

Storage tank / LNG / SPH method / crash / plane

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GE Qing-zi1,2,WENG Da-gen2,ZHANG Rui-fu2. Whole process simulation analysis of aircraft crash into extra-large LNG storage[J]. Journal of Vibration and Shock, 2016, 35(4): 1-7

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