Composites Science and Engineering ›› 2020, Vol. 0 ›› Issue (10): 110-121.

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EXPERIMENTAL AND SIMULATION STATUS OF BEARING CAPACITY OF COMPOSITE PANELS WITH DAMAGE

NI Ying-ge1, ZOU Peng2*, BI Xue2   

  1. 1. School of Aircraft Engineering, Xi'an Aeronautical University, Xi'an 710077, China;
    2. Full Scale Aircraft Structural Static/Fatigue Laboratory, Aircraft Strength Research Institute of China, Xi'an 710065, China
  • Received:2020-07-06 Online:2020-10-28 Published:2020-10-28

Abstract: Stiffened composite panels are widely used in modern aviation industry because of its thin-walled and high bearing efficiency. It is inevitable to cause damages by the low-speed impaction during manufacturing and servicing processes. Thus, how to predict the bearing capability of stiffened composite panels with damages has become an important problem to ensure the safety of composite structures during the servicing process. In this paper, the failure mechanism of composite stiffened panel is summarized from two aspects of experiment and simulation. In the experimental study, four typical experimental types including the compression after impact, compression after impact fatigue, shear after impact and shear after impact fatigue are illustrated and analyzed. In the simulation research, the modeling method of stiffened panel, damage modeling method, failure criteria and property degradation rules are summarized. Finally, the existing problems in the current simulation are proposed, which provides a useful reference for further research on the bearing ability of composite stiffened panel.

Key words: composites, stiffened panel, damage, bearing capability

CLC Number: