Abstract
Corrugated-board explosion-proof wall is the main means to prevent explosion shock wave damage, and it is important to study the effect of different corrugated plates on the shock wave. Using a high-speed schlieren experimental system and an air overpressure test system, the wave-blocking characteristics of different forms of corrugated plates are comprehensively studied. The schlieren images were used to analyze the influence that the corrugation shape of a corrugated plate has on the shock wave propagation characteristics. The results show that the reflection process of the triangular-, trapezoidal-, and half-cylindrical-shaped corrugated plates exhibit differences. The number of reflected waves from the triangular corrugated plate is much greater than that from the other corrugated plates, and it will consume more energy. The diffraction wave-front velocity has a trend of initially decreasing and then increasing and is also reduced by different degrees by the reflection. Comparative analysis of the schlieren images and the air shock wave overpressure test shows that plates corrugated with different corrugation shapes decrease the diffraction overpressure peak and exhibit a hysteresis.
Highlights
Blast explosions cause a huge impact in the production and life of our modern society. e human body, has a very limited tolerance for the shock waves emanating from the explosion product
Nian et al [11] carried out numerical simulation analysis on the transmission and diffraction effects of flexible explosion-proof walls, compared the variation characteristics of pressure waveforms, and obtained the distribution law of the pressure field behind the wall
Yu et al [14] studied the dynamic response of a trapezoidal corrugated-board explosion wall under blast loading by ANSYS/LS-DYNA finite element simulation software, analyzed the influence of material strain rate effect, and compared the stress distribution and displacement time history curve of different width walls
Summary
Blast explosions cause a huge impact in the production and life of our modern society. e human body, has a very limited tolerance for the shock waves emanating from the explosion product. Nian et al [11] carried out numerical simulation analysis on the transmission and diffraction effects of flexible explosion-proof walls, compared the variation characteristics of pressure waveforms, and obtained the distribution law of the pressure field behind the wall. Yu et al [14] studied the dynamic response of a trapezoidal corrugated-board explosion wall under blast loading by ANSYS/LS-DYNA finite element simulation software, analyzed the influence of material strain rate effect, and compared the stress distribution and displacement time history curve of different width walls. A pressure field comprehensive test system was used to explode experiments on different forms of corrugated steel plates, where visualization of the air shock wave propagation process was obtained with schlieren images. E waveblocking characteristics of different forms of corrugated steel plate for explosion shock waves were studied, and the propagation law of reflection and diffraction was analyzed A pressure field comprehensive test system was used to explode experiments on different forms of corrugated steel plates, where visualization of the air shock wave propagation process was obtained with schlieren images. e waveblocking characteristics of different forms of corrugated steel plate for explosion shock waves were studied, and the propagation law of reflection and diffraction was analyzed
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