BLASTING, Volume. 38, Issue 2, 167(2021)

Numerical Analysis of Damage of H-shaped Steel Column under Close Explosion Load

LI Peng-peng1,*... GAO Zhen-ru1, CHEN Ye-qing2, WU Shuang-zhang1 and ZHOU Zhao-peng2 |Show fewer author(s)
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  • 2[in Chinese]
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    In view of the high hit accuracy of modern weapons and ammunition, it is of great significance to study the damage of H-beam steel columns under close explosive loads, for H-shaped steel columns are important load-bearing components of most steel structure workshops.According to the similarity law, scale transformation was applied to a H-shaped steel column of a typical steel structure factory building.Using the LS-DYNA finite element software, the fluid-solid coupling method was used to simulate the impact of close explosion loads from 9 charges at different scaled distances on the similarity model of the H-shaped steel column.By comparing the bearing capacity of the H-shaped steel column before and after the explosion loading, a steel column damage index was determined.The results show that in the interval between 0.100 m·kg-1/3 and 0.400 m·kg-1/3, the maximum and minimum damage index are 0.533 and 0.095, respectively.Besides, the damage index generally decreases with the increase of the scaled distance.When the scaled distance is 0.100 m·kg-1/3, the energy dissipated in the shear part of the steel column web is significantly increased.This results in a general rebellion trend phenomenon in the interval between 0.100 m·kg-1/3 and 0.125 m·kg-1/3, and the damage index increases as the scaled distance increases.

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    LI Peng-peng, GAO Zhen-ru, CHEN Ye-qing, WU Shuang-zhang, ZHOU Zhao-peng. Numerical Analysis of Damage of H-shaped Steel Column under Close Explosion Load[J]. BLASTING, 2021, 38(2): 167

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    Paper Information

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    Received: Feb. 5, 2021

    Accepted: --

    Published Online: Feb. 2, 2024

    The Author Email: Peng-peng LI (lpplxlysys@outlook.com)

    DOI:10.3963/j.issn.1001-487x.2021.02.025

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