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Volume 37 Issue 3
Jun 2023
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Chinese Journal of High Pressure Physics  > 2023  >  37(3): 034102.
QIAO Jingyan, LI Jinzhu, ZHANG Xihuang, YAO Zhiyan, SHEN Shiliang. Dynamic and Static Tensile Mechanical Properties of Glass Fiber Reinforced Plastics[J]. Chinese Journal of High Pressure Physics, 2023, 37(3): 034102. doi: 10.11858/gywlxb.20230618
Citation: QIAO Jingyan, LI Jinzhu, ZHANG Xihuang, YAO Zhiyan, SHEN Shiliang. Dynamic and Static Tensile Mechanical Properties of Glass Fiber Reinforced Plastics[J]. Chinese Journal of High Pressure Physics, 2023, 37(3): 034102. doi: 10.11858/gywlxb.20230618
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Dynamic and Static Tensile Mechanical Properties of Glass Fiber Reinforced Plastics

doi: 10.11858/gywlxb.20230618
  • 1.

    State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

  • 2.

    Institute of Electronic Engineering, CAEP, Mianyang 621999, Sichuan, China

  • Received Date: 23 Feb 2023
  • Rev Recd Date: 16 Mar 2023
    • Available Online: 20 Jun 2023
  • Issue Publish Date: 05 Jun 2023
    Abstract
  • To systematically study the mechanical properties of glass fiber reinforced plastics, the stress-strain curves and corresponding mechanical parameters of glass fiber reinforced plastic with strain rates of 0.001–0.1 s−1 and 1128–1840 s−1 were obtained by material testing system (MTS) and split Hopkinson tensile bar (SHTB). The results show that the glass fiber reinforced plastic exhibits significant strain rate strengthening effect under dynamic loading. Therefore, the dynamic increasing factor was introduced to describe the strengthening effect of strain rate on mechanical properties of glass fiber reinforced plastics. Scanning electron microscopy (SEM) was used to observe and analyze the damaged section, and it was found that the fiber bundle was flatly fracture under dynamic loading, rather than failed by pulling out under static loading. In addition, the results show that the fracture toughness of the fiber-matrix interface under dynamic tensile loading is higher than that under static loading. Finally, based on the dynamic tensile mechanical response of glass fiber reinforced plastic, a nonlinear tensile constitutive model considering damage was established by introducing the macroscopic damage accumulation. Compared with the experimental results, the model as a whole can be used to characterize the dynamic tensile mechanical response of glass fiber reinforced plastic.

     

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