Fiber Reinforced Plastics/Composites ›› 2019, Vol. 0 ›› Issue (9): 5-13.

• BASIC STUDY •     Next Articles

FAILURE ANALYSIS OF CARBON FIBER WINDED THIN-WALLED STEEL TUBE UNDER TRANSVERSE CRUSHING LOAD

SUN Jia-rui1, MA Qi-hua1,2*, CAI Ming3, HU Pei-yuan4   

  1. 1.School of Mechanical and Automotive Engineering,Shanghai University of Engineering Science, Shanghai 201620, China;
    2.State Key Laboratory for Modification of Chemical Fibers and Polymer, Donghua University, Shanghai 201620, China;
    3.School of Air Transportation,Shanghai University of Engineering Science, Shanghai 201620, China;
    4.Huayu Automotive Body Components Technology (Shanghai) Co., Ltd., Shanghai 200433, China
  • Received:2018-11-29 Online:2019-09-28 Published:2019-09-28

Abstract: The bending collapse behavior of carbon fiber reinforced polymer (CFRP) wound steel circular hollow tubes was investigated under transverse quasi-static loading by three-point bending test and simulation. Five kinds of Steel/CFRP hybrid tubes with different winding layers or sequences were selected to analyze their bending failure process, failure modes and energy absorption characteristics. The results showed that the failure process of each hybrid tube under transverse loading was basically consistent with the pure steel tube, and the failure mode was dominated by the stable collapse mode of steel tube, while the failure morphologies were slightly different due to the influence of outer filament winding modes. On the energy absorption characteristics of hybrid tubes, it was found that the specific energy absorption of the hybrid tube increased with the increase of winding layers, and the distribution of (±45°) filament winding had a significant influence on the energy absorption characteristics of the hybrid tubes. Compared with the increase of the number of winding layers, reasonable winding sequences design can achieve better energy absorption performance. The special energy absorption of the Steel/CFRP [±45°/90°/90°]2 hybrid tube is the best and 41.37% higher than that of the pure steel tube. On this basis, the Von-Mises stress distribution of composite laminates under different loads was analyzed by using the finite element model which is in good agreement with the experiment. It is proved that different winding angles have different effects on the stress burden, which provides a basis for improving the filament winding mode.

Key words: Steel/CFRP hybrid tubes, three-point bending, winding layers, winding sequences, energy absorption characteristics, Von-Mises stress

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