| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Research on Blast-resistant Performance and Numerical Simulation of Honeycomb Protective Structure Constructed of Lightweight Materials |
| HE Qiulin, SHI Shaoqing, CUI Lianming, SUN Jianhu, CHEN Zipeng
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| Department of Military Facility, Army Logistics University of PLA, Chongqing 401331, China |
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Abstract In order to overcome the weakness of the permanent blast-resistant structure, such as the low efficiency, large construction and hard dismantlement, a honeycomb protective structure constructed of lightweight materials is developed. Experiments have been conducted to analyse the blast-resistant performance and the protective effect. With the pressure sensor, the pressure wave and the maximum value of the overpressure can be depicted in front of or behind the structure. By using the LS-DYNA software to simulate the experimental process and comparing the experimental results with the simulation results, the vibration and distribution of the overpressure which is induced by the blast wave towards the honeycomb protective structure, have been demonstrated. The simulation results show good consistency with the history curves and the maximum values of the overpressure from different experimental points. By analysing the experimental data and the simulation results, it shows that: from the point No.1 in the front of the surface to the point No.2 behind the surface, the maximum of the overpressure has been decreased over 90%. From the point No.2 behind the surface to the point No.3 behind the surface, the maximum of the overpressure has been decreased over 60%. And all these results indicate that the protective structure has the capability in damping the energy effectively, protecting the people behind the structure. Moreover, the connection in the upper part of the honeycomb unit, which is the weak point, will be damaged when the structure is under the blasting wave. Towards this part, increasing the intensity or the density of the suture can improve the blast-resistance performance of the whole protective structure.
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Published: 24 December 2020
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| Fund:This work was financially supported by the Military Research Project (x2011026), the Achievement Transfer Program of Institutions of Higher Education in Chongqing (kjzh7138), the Natural Science Foundation of Chongqing (cstc2019jcyj-msxmX0215). |
About author:: Qiulin He, male, is currently a doctoral student majoring in civil engineering in the department of military facilities, Army Logistics University of PLA. He is mainly engaged in the study of disaster prevention and reduction engineering and protection engineering.
Shaoqing Shi, male, professor of Army Logistics University of PLA, doctoral supervisor, national millions of talented persons, young and middle-aged experts with outstanding contributions from the state, top-notch personnel in high-level disciplines of the army, enjoys special government allowances. He is mainly engaged in the teaching and scientific research of disaster prevention and reduction engineering and protection engineering. He is responsible for more than 10 national science and technology support projects, national natural fund and military key scientific research projects. In the past five years, he has published more than 30 academic papers, more than 10 papers included in SCI (EI). Fifteen graduate students have been trained including seven doctoral students and six master students. He has won one second prize for national scientific and technological progress, two first prize for military scientific and technological progress, five second prize for military scientific and technological progress, and one second prize for Chongqing Natural Science Award. |
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1 Fu Z M, Huang J Y, Zang N. Fire Science and Technology, 2009, 28(6), 390(in Chinese).
傅智敏, 黄金印, 臧娜. 消防科学与技术, 2009, 28(6), 390.
2 Zineddin M Z. Behavior of structural concrete slabs under localized impact. Ph.D. Thesis, The Pennsylvania University, USA, 2002.
3 Jacob N,Yuen C Y,et al.International Journal of Impact Engineering, 2004, 30(8-9), 1179.
4 Jaconto A C,Ambrosini R D.International Journal of Impact Engineering, 2001, 25(10), 927.
5 Lungdon G S, Yuen S C K.International Journal of Impact Engineering, 2005, 31(1), 55.
6 Shi S Q, Zhang X J, Yin P. Underground Space,2003(1), 66 (in Chinese).
石少卿, 张湘冀, 尹平. 地下空间, 2003(1), 66.
7 Mu C M, Ren H Q, Li Y C, et al. Mechanics in Engineering, 2009, 31(5), 35 (in Chinese).
穆朝民, 任辉启, 李永池, 等. 力学与实践, 2009, 31(5), 35.
8 He H C, Tang D G, Chen X X, et al.Building Technology Development, 2002(8), 3(in Chinese).
贺虎成, 唐德高, 陈向欣,等. 建筑技术开发, 2002(8), 3.
9 时党勇, 李裕春, 张胜民. 基于ANSYS/LS-DYNA8.1进行显示动力分析, 清华大学出版社,2005.
10 Yan G J, Zhou M A, Yu L, et al. Mining Technology, 2011, 11(5), 89(in Chinese).
严国建, 周明安, 余轮, 等. 采矿技术, 2011, 11(5), 89.
11 Hou J L, Jiang J W, Men J B, et al. Transactions of Beijing Institute of Technology, 2013, 33(6), 556(in Chinese).
侯俊亮, 蒋建伟, 门建兵, 等. 北京理工大学学报, 2013, 33(6), 556.
12 Gao X N, Wu Y J. Chinese Journal of Explosives & Propellants, 2015, 38(3), 32(in Chinese).
高轩能, 吴彦捷. 火炸药学报, 2015,38(3), 32. |
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2020, Vol. 34 
