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Simulation Study on Blast Resistance Test of Blast Wall Based on LS-DYNA Coupling Method

Received: 14 April 2021     Published: 24 May 2021
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Abstract

In order to study the pressure change with time at the blast face of the blast resistant wall when the shock wave acts on the blast resistant wall after the explosion of TNT explosive, the equivalent model of the blast resistant wall is designed based on the similarity theory, and the TNT near ground explosion test is carried out. During the test, the pressure change data of the design measuring point on the blast resistant wall with time are collected by high-speed data acquisition instrument and pressure sensor, The time history curve of shock wave overpressure was obtained by processing the data. Then, LS-DYNA finite element analysis software is used to establish a separate finite element model of the blast wall. At the same time, the relevant parameters of air, explosive, concrete and ground in the explosion field are set. The numerical simulation of the explosion field is carried out, and the overpressure time history curve at the measuring point is extracted by the finite element analysis post-processing software. Compared with the numerical simulation results, it is found that the numerical simulation results are in good agreement with the experimental data, which indicates that the selection and setting of parameters in the simulation calculation are reasonable. The model and algorithm provide an effective means for the numerical simulation of blast wall in the explosion field.

Published in Science Discovery (Volume 9, Issue 3)
DOI 10.11648/j.sd.20210903.16
Page(s) 114-120
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2021. Published by Science Publishing Group

Keywords

TNT, Explosion Shock Wave, Blast Wall, LS-DYNA

References
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  • APA Style

    Zhu Gan, Ding Jianguo. (2021). Simulation Study on Blast Resistance Test of Blast Wall Based on LS-DYNA Coupling Method. Science Discovery, 9(3), 114-120. https://doi.org/10.11648/j.sd.20210903.16

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    ACS Style

    Zhu Gan; Ding Jianguo. Simulation Study on Blast Resistance Test of Blast Wall Based on LS-DYNA Coupling Method. Sci. Discov. 2021, 9(3), 114-120. doi: 10.11648/j.sd.20210903.16

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    AMA Style

    Zhu Gan, Ding Jianguo. Simulation Study on Blast Resistance Test of Blast Wall Based on LS-DYNA Coupling Method. Sci Discov. 2021;9(3):114-120. doi: 10.11648/j.sd.20210903.16

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  • @article{10.11648/j.sd.20210903.16,
      author = {Zhu Gan and Ding Jianguo},
      title = {Simulation Study on Blast Resistance Test of Blast Wall Based on LS-DYNA Coupling Method},
      journal = {Science Discovery},
      volume = {9},
      number = {3},
      pages = {114-120},
      doi = {10.11648/j.sd.20210903.16},
      url = {https://doi.org/10.11648/j.sd.20210903.16},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sd.20210903.16},
      abstract = {In order to study the pressure change with time at the blast face of the blast resistant wall when the shock wave acts on the blast resistant wall after the explosion of TNT explosive, the equivalent model of the blast resistant wall is designed based on the similarity theory, and the TNT near ground explosion test is carried out. During the test, the pressure change data of the design measuring point on the blast resistant wall with time are collected by high-speed data acquisition instrument and pressure sensor, The time history curve of shock wave overpressure was obtained by processing the data. Then, LS-DYNA finite element analysis software is used to establish a separate finite element model of the blast wall. At the same time, the relevant parameters of air, explosive, concrete and ground in the explosion field are set. The numerical simulation of the explosion field is carried out, and the overpressure time history curve at the measuring point is extracted by the finite element analysis post-processing software. Compared with the numerical simulation results, it is found that the numerical simulation results are in good agreement with the experimental data, which indicates that the selection and setting of parameters in the simulation calculation are reasonable. The model and algorithm provide an effective means for the numerical simulation of blast wall in the explosion field.},
     year = {2021}
    }
    

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  • TY  - JOUR
    T1  - Simulation Study on Blast Resistance Test of Blast Wall Based on LS-DYNA Coupling Method
    AU  - Zhu Gan
    AU  - Ding Jianguo
    Y1  - 2021/05/24
    PY  - 2021
    N1  - https://doi.org/10.11648/j.sd.20210903.16
    DO  - 10.11648/j.sd.20210903.16
    T2  - Science Discovery
    JF  - Science Discovery
    JO  - Science Discovery
    SP  - 114
    EP  - 120
    PB  - Science Publishing Group
    SN  - 2331-0650
    UR  - https://doi.org/10.11648/j.sd.20210903.16
    AB  - In order to study the pressure change with time at the blast face of the blast resistant wall when the shock wave acts on the blast resistant wall after the explosion of TNT explosive, the equivalent model of the blast resistant wall is designed based on the similarity theory, and the TNT near ground explosion test is carried out. During the test, the pressure change data of the design measuring point on the blast resistant wall with time are collected by high-speed data acquisition instrument and pressure sensor, The time history curve of shock wave overpressure was obtained by processing the data. Then, LS-DYNA finite element analysis software is used to establish a separate finite element model of the blast wall. At the same time, the relevant parameters of air, explosive, concrete and ground in the explosion field are set. The numerical simulation of the explosion field is carried out, and the overpressure time history curve at the measuring point is extracted by the finite element analysis post-processing software. Compared with the numerical simulation results, it is found that the numerical simulation results are in good agreement with the experimental data, which indicates that the selection and setting of parameters in the simulation calculation are reasonable. The model and algorithm provide an effective means for the numerical simulation of blast wall in the explosion field.
    VL  - 9
    IS  - 3
    ER  - 

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Author Information
  • College of Science, Nanjing University of Scinece and Technology, Nanjing, China

  • College of Science, Nanjing University of Scinece and Technology, Nanjing, China

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