Underwater shortest field electrical spark bubble wall pressure load measurement experiment device

Abstract

The invention provides an underwater shortest field electrical spark bubble wall pressure load measurement experiment device. A measurement rod is arranged in a measurement rod protection barrel, penetrates through an opening in a target plate and is in contact with water in a water tank; an underwater electrical spark discharge needle is arranged nearby the target plate; a needle tip of the discharge needle is coaxial with the measurement rod. Electrical spark discharge triggers underwater explosion bubbles, and an explosion load acting on the wall surface of the target plate generates a stress wave in the measurement rod. A signal of the stress wave in the rod is measured by means of a strain gage arranged on the measurement rod, the explosion load acting on the wall surface of the target plate is derived reversely, and an underwater shortest field electrical spark bubble wall pressure load is measured. The whole process of underwater electrical spark bubbles is observed by means of a high-speed camera. The device is safe to use and good in experiment effect, and can research the underwater shortest field electrical spark bubble wall pressure load, thereby providing an effective experiment method for research on an underwater shortest field explosion wall pressure load mechanism.

Description

technical field [0001] The invention relates to an underwater extremely near-field electric spark bubble wall pressure load measurement experimental device, which belongs to the field of underwater explosion load research experimental devices. Background technique [0002] The wall pressure load measurement of the extreme near-field underwater explosion has always been one of the important research contents in the field of underwater explosion, anti-explosion and shock resistance of ships. With the rapid development of underwater guidance technology, the direct hit rate of underwater weapons has been greatly improved, the hit spread diameter has been greatly reduced, and the probability of ships suffering underwater extreme near-field explosions has greatly increased. In order to improve the vitality of the ship, only when the wall pressure load of the underwater extreme near-field explosion is accurately obtained, can the ship structure design be carried out in a targeted m...

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Problems solved by technology

[0004] On the other hand, the manufacture and use of pyrotechnics are strictly controlled by the state, so the underwater near-field explosion experiments using explosives, gunpowder and other pyrotechnics will be subject to many restrictions, and most scholars do not have the opportunity to carry out such experiments. It makes it more difficult to study the wall pressure load measurement of underwater extremely near-field explosion

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