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.
何秋霖, 石少卿, 崔廉明, 孙建虎, 陈自鹏. 轻质材料构筑的蜂窝防护结构抗爆性能试验与数值模拟研究[J]. 材料导报, 2020, 34(24): 24023-24028.
HE Qiulin, SHI Shaoqing, CUI Lianming, SUN Jianhu, CHEN Zipeng. Research on Blast-resistant Performance and Numerical Simulation of Honeycomb Protective Structure Constructed of Lightweight Materials. Materials Reports, 2020, 34(24): 24023-24028.
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2020, Vol. 34 
