Journal of Northeastern University(Natural Science) ›› 2025, Vol. 46 ›› Issue (5): 80-86.DOI: 10.12068/j.issn.1005-3026.2025.20230318

• Mechanical Engineering • Previous Articles     Next Articles

Damage Performance Analysis of Thin-Walled Carbon Fiber Tube Fittings with Delamination Damage

Zhong LUO1,2,3(), Xin-yu SUN1,2, Bing YU1,2, Cheng-shuang ZHANG4   

  1. 1.School of Mechanical Engineering & Automation,Northeastern University,Shenyang 110819,China
    2.Key Laboratory of Vibration and Control of Aero-Propulsion Systems,Ministry of Education,Northeastern University,Shenyang 110819,China
    3.Foshan Graduate School of Innovation,Northeastern University,Foshan 528312,China
    4.Xi’an Aerospace Composites Research Institute,Xi’an 710025,China.
  • Received:2023-11-27 Online:2025-05-15 Published:2025-08-07
  • Contact: Zhong LUO

Abstract:

Taking the thin-walled carbon fiber tubes in the support structure of satellite antennas as the research object, the damage resistance of thin-walled carbon fiber tubes with damage was investigated with respect to the invisible delamination damage generated by low-energy impacts that are prone to occur in the process of tube transporting and assembling. A finite element model of a thin-walled carbon fiber tube with delamination damage was developed using ABAQUS solid units, and the finite element model was validated by low-energy transverse impact experiments. Considering the actual working conditions of the tube, the effects of fiber orientation and delamination position on the compressive properties of the tube and the effect of delamination damage on the secondary transverse impact were investigated. The results showed that the closer the fiber orientation is to the axial direction, the smaller the effect of delamination damage on the compressive properties of the tube. The resistance of the tube to transverse impact damage decreases only in the position of the damage.

Key words: thin-walled carbon fiber tube, delamination damage, axial compression, fiber orientation, transverse impact

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