Abstract：To explore the nuclear explosion load simulation test and numerical calculation method, by evenly arranging the detonating cord in the closed blasting pit, using the detonating cord to explode to form a uniform explosion pressure load (plane wave), four test points arranged symmetrically on the bottom of the blasting pit were measured The pressure load characteristics of the pressure load are analyzed, and the finite element method is used to carry out numerical calculation and analysis on the test based on the influence of the post-charge combustion effect. The research results show that the test and numerical calculation results are in good agreement, the shock wave peak overpressure deviation does not exceed 10%, and the maximum quasi-static pressure peak deviation is 5.7%; the pressure load at each measurement point under the small equivalent U-shaped detonating fuse in the closed blasting pit is relatively good The consistency of, can effectively form a plane long pulse width impact load, which is similar to the load characteristics of a nuclear explosion.
Key words: nuclear explosion shock wave; simulation experiment; implosion; numerical calculation; post-combustion effect; quasi-static pressure
李怿，李典，侯海量，李永清. 基于密闭空间内爆的核爆冲击波载荷模拟试验和数值计算方法[J]. 振动与冲击, 2022, 41(17): 138-144.
LI Yi, LI Dian, HOU Hailiang, LI Yongqing. Analog tests and numerical calculation method of nuclear explosion shock wave load based on closed space implosion. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(17): 138-144.
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