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Volume 32 Issue 1
Dec 2017
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Chinese Journal of High Pressure Physics  > 2018  >  32(1): 014101.
ZHAO Fuqi, XU Peibao, WEN Heming. Influence of Specimen Size in SHPB Tests on Concrete[J]. Chinese Journal of High Pressure Physics, 2018, 32(1): 014101. doi: 10.11858/gywlxb.20170532
Citation: ZHAO Fuqi, XU Peibao, WEN Heming. Influence of Specimen Size in SHPB Tests on Concrete[J]. Chinese Journal of High Pressure Physics, 2018, 32(1): 014101. doi: 10.11858/gywlxb.20170532
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Influence of Specimen Size in SHPB Tests on Concrete

doi: 10.11858/gywlxb.20170532

  • CAS Key Laboratory for Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230027, China

Funds:

National Natural Science Foundation of China 11572317

More Information
  • Author Bio:

    ZHAO Fuqi(1989—), male, doctoral student, major in impact dynamics. E-mail: zfq126@mail.ustc.edu.cn

  • Corresponding author: WEN Heming(1965—), male, Ph. D, professor, major in impact dynamics. E-mail: hmwen@ustc.edu.cn
  • Received Date: 16 Jan 2017
  • Rev Recd Date: 24 Mar 2017
    Abstract
  • The split Hopkinson pressure bar (SHPB) tests are often conducted to obtain the dynamic compressive strengths of concrete-like materials which need to be interpreted or analyzed correctly as these data are very important for the construction of reliable constitutive equations used in numerical simulations.In the present work, a numerical study is performed on the influence of specimen size on concrete in SHPB tests using a rate-independent material model.A new empirical equation for the dynamic increase factor due to inertia (confinement) effect is also proposed which took account of specimen size effect through its volume.It is shown that the empirical formula agrees well with the numerical results for the SHPB tests on concrete with different specimen sizes, and the dynamic increase factor due to inertia (confinement) effect increases with the increase of specimen size.

     

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