Explosive underwater explosion bubble pulsation testing device and method

Abstract

The invention discloses an explosive underwater explosion bubble pulsation testing device and method. By adopting a wave-absorbing material plate and an optical channel matched with an optical measurement system, clutters in a pressure test curve are effectively reduced, meanwhile, the bubble surface brightness is improved, the bubble movement boundary is clearer, and the influence of explosion products on the shooting bubble definition is reduced. By adopting the device designed by the invention, the underwater explosion bubble pulsation test of different types of explosives can be carried out, and the defect that the detonation performance of different explosives cannot be reflected in the underwater explosion bubble pulsation characteristic in the existing test method is overcome; and an experimental result support is provided for subsequent comprehensive and complete underwater explosion mechanism analysis and bubble damage mechanism analysis.

Description

technical field [0001] The invention belongs to the technical field of underwater explosion tests, and in particular relates to an underwater explosion bubble pulse test device and method for explosives. Background technique [0002] Explosion in water is the most important means of damage to underwater weapons, including severe local damage to ship structures caused by shock waves, and secondary damage to ships caused by bubble pulsation. The bubble energy produced by the bubble pulsation during the underwater explosion of explosives accounts for about half of the total energy. The damage to the ship caused by the bubble pulsation process mainly includes the following two aspects. One is that the bubble pulsation process will cause damage to the bottom of the ship near the bubble. Influenced by the change of the shape of the air bubble, the whip-like undulating motion occurs, which damages the overall structure of the ship; second, the high-speed water jet directed at the b...

AI Technical Summary

Problems solved by technology

During the test, because the shock wave generated by the explosion is very destructive to the test device, and the underwater explosion bubbles have the characteristics of rapid pulsation in a short period of time and large expansion bubbles, etc., therefore, the underwater explosion bubble pulsation test of explosives is relatively difficulty

[0004] In the prior art, in view of the characteristics and difficulties of underwater explosion testing of explosives, people often use electric sparks, lasers, etc. to generate bubbles instead of explosion bubbles. Bubble pulsation characteristics of underwater explosions are different. Bubbles generated by electric sparks, lasers, etc. cannot reflect the detonation performance of explosives. Therefore, different characteristics of bubble pulsation under different explosive underwater explosions cannot be obtained, which is not conducive to underwater Research on the characteristics of explosion bubbles and the damage mechanism of underwater weapons on structures

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