COMPOSITES SCIENCE AND ENGINEERING ›› 2021, Vol. 0 ›› Issue (9): 83-88.DOI: 10.19936/j.cnki.2096-8000.20210928.013

• APPLICATION RESEARCH • Previous Articles     Next Articles

Study on the anti-crash energy absorption characteristic of composite structure in the sub-cargo structure

SHI Meng1, WANG Yang1, WU Zhi-bin1,2, LIU Fu1*   

  1. 1. Shanghai Aircraft Design and Research Institute, Shanghai 201210, China;
    2. School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China
  • Received:2020-12-30 Online:2021-09-28 Published:2021-10-13

Abstract: In a survivable crash, the sub-cargo structure is the main energy-absorbing component in the process of an aircraft crash. As an important energy-absorbing element during a crash, the composite stanchion has an important impact on the crash resistance of the sub-cargo structure. The vertical crash test of the sub-cargo structure was carried out. Comparing the structural deformation failure modes and energy absorption conditions, the relationship between energy absorption characteristics of the sub-cargo structure at a crash speed of 9.144 m/s and the angle of the stanchion, the thickness of the stanchion and the trigger form are obtained. The results show that when the angle of the stanchion is 90 degrees, the thickness of the stanchion varies in sections and the connection between the stanchion and the frame is weak, and the sub-cargo structure has the best energy-absorbing performance.

Key words: composite structures, crashworthiness, energy absorption, crush test, composites failure mode

CLC Number: