Abstract
Predicting the location of the three-wave point and the changing law of the three-wave point is of great significance for accurately assessing the power of large-yield explosives or warheads. Based on the AUTODYN finite element analysis software, the three-wave point trajectory in the explosion field is studied by numerical simulation. The preliminary analysis shows that in the blast field, the explosion shock wave always spreads around the explosive center, and the three-wave point height trajectory Both maintain a rising trend. In the midfield (burst distance 4.0~7.0m), regardless of changing the charge equivalent, explosion height, initiation point position, size, material and reflection interface, the three-wave point height increase rate is relatively slow, while in the far field (burst center distance >7.0m) The growth rate is relatively fast. When the explosive height of the explosive does not change, change the explosive equivalent. The smaller the equivalent, the higher the three wave points at the same measuring point. When the explosive equivalent is unchanged, change the explosion height, the smaller the explosion height, the higher the three wave points at the same measuring point. The change of the initiating point position in the midfield has little effect on the three-wave point trajectory. The higher the initiating point position in the far field, the faster the three-wave point trajectory increases.
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