Detonation Shock Dynamic Behavior Of Split-tube Charge Holder

High speed schlieren experiments about detonation wave of different-structuresplit-tube charge holder are carried out, and numerical simulation is used to come by thedynamic evolution mechanism of split-tube charge holder detonation wave. Four kindssplit-tube charge holder: double-slit/coupling-slit, double-slit/decoupling-slit, singleslit/coupling-slit and single-slit/decoupling-slit cartridges are studied to explore themoving process of blast wave front, and the influence of material and charge density tosplit-tube charge holder detonation wave are made respectively from numerical analysisand the mechanism of split-tube charge holder detonation fluctuation is discussed.Numerical simulation is applied and only image experiment is combined to study theplastic dynamic response of split-tube charge holder under explosion load. The impactof split-tube charge holder dynamic response to directional fracture blasting effect isanalyzed and the influence of different constitutive model on the dynamic response ofthe split-tube charge holder is made. Underwater explosions sensor fixture of split-tubecharge holder is designed and research about spatial and temporal parametersdistribution of cutting seam cartridges is also carried out, gaining shock wave andbubble pulsation parameters of split-tube charge holder in the direction of cutting seam and the perpendicular of slit. The spatial and temporal parameters of split-tube chargeholder explosion wave are got, and at the same time, the spectral characteristics of theblast wave in the direction of cutting seam and the perpendicular of slit are studied andanalyzed. Finally, directional fracture blasting mechanism of cutting seam cartridge isexplained from a new perspective.