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Underwater explosion experiment system

An experimental system, underwater explosion technology, applied to seismology in areas covered by water, can solve the lack of effective research methods for the pulsation of explosion products, the lack of measurement and observation methods for the mechanism of underwater explosions, and the shock wave amplitude high value issues

Inactive Publication Date: 2012-10-24
INST OF MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

Due to the large energy released after the explosion of the explosive and the high amplitude of the shock wave generated, the experiment requires a large water area to ensure the safety of personnel, and it is difficult to measure the near-field pressure generated by the explosion
[0006] In addition, the traditional underwater explosion experiment method is difficult to accurately control the energy of explosives, and there is no effective research method for the pulsation law of explosion products.
Therefore, there is a lack of effective measurement and observation methods for the mechanism of underwater explosions

Method used

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Embodiment Construction

[0014] Design principle of the present invention is as follows:

[0015] In the laser-matter interaction stage, the pressure characteristics of the plasma are calculated using the pressure coupling calculation model combined with the coupling analysis program. During the laser irradiation process, the expansion velocity of the plasma is composed of the laser ablation velocity of the quantitatively variable confinement medium and the stress disturbance velocity. Part of the energy absorbed by the plasma is used to do work on the target body, and the other part is converted into an increase in the internal energy of the plasma.

[0016] I p ( t ) = p ( t ) dL ( t ) dt + d dt ...

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Abstract

The invention discloses an underwater explosion experiment system. The underwater explosion experiment system comprises a laser generator, a camera unit and a container with a certain volume, wherein the preset amount of water is arranged in the container; a light-transmitting restraining unit is fixedly arranged in the container, an underwater structure simulating impaction is arranged in the container, and the restraining unit is close to the underwater structure; and an absorbing unit is arranged on one surface (close to the restraining unit) of the underwater structure. The underwater explosion experiment system disclosed by the invention can greatly simulate an underwater explosion process.

Description

technical field [0001] The invention relates to an underwater explosion experiment system. Background technique [0002] Underwater explosion refers to the instantaneous release of energy from explosives, torpedoes, bombs or nuclear bombs in water, forming a shock wave that expands around and decays continuously in the water, and the shock wave interacts with structures such as ships to damage the structure. The underwater explosion process can be roughly divided into three stages: detonation of explosives in water, propagation and attenuation of shock waves, and oscillation and floating of explosion product balloons. [0003] The explosive detonates first, releasing a large amount of energy instantaneously, forming high-temperature and high-pressure explosion products. During the expansion process, the high-pressure balloon is constrained by the inertia of the surrounding water, forming a spherical shock wave that propagates outward in the water, and at the same time, a sp...

Claims

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Application Information

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IPC IPC(8): G01V1/38
Inventor 黄晨光吴先前王一伟魏延鹏宋宏伟
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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