Simulation Study on Wave Attenuation Performance of Rigid Explosion-Proof Wall with Cone-Shaped Blast-Facing Surface

According to the previous research on the simulation of corrugated plate explosion-proof wall, the corner cone explosion-proof wall is proposed by changing the structure of the explosion-proof wall. ANSYS/LS-DYNA finite element software was used to simulate and analyze the new explosion-proof wall with a cone height of 15, 22.5, 30, 37.5, 45 cm and a bottom edge of 30 cm under the same blasting height and proportional blasting distance. The feasibility of the model is verified by comparing the empirical formula, and then the overpressure peak of each test point is analyzed. Firstly, it is concluded that the triangular cone explosion-proof wall has a stronger weakening effect on the shock wave than the straight wall, and the cone heights of 15 cm and 30 cm are the most obvious. Secondly, the triangular cone wall will change the shape of the shock wave after passing through the explosion-proof wall to a certain extent. Finally, the peak value of superimposed overpressure at 1–1.5 times the height of the wall behind the triangular cone wall will be greater than that of the ordinary straight wall.