Cross-array underwater explosion pressure load space distribution measurement device and system

Abstract

The invention belongs to the technical field of underwater explosion pressure sensor design, in particular to a cross-array underwater explosion pressure load spatial distribution measurement device and system. The invention makes full use of the transmission and reflection laws of stress waves in one-dimensional rods, and designs a cross-array load transmission and separation device, which transmits the stress wave propagating from the Hopkinson rod measuring element into the flyer, and the flyer carries a complete The stress wave pulse caused by the shock wave load breaks away from the contact with the Hopkinson rod measuring element, realizing the separation of the shock wave load from the Hopkinson rod measuring element. The present invention designs a cross-array type flyer limit recovery device, which restricts the vertical and lateral displacement of the high-speed moving flyer, and ensures the safe recovery and reuse of the flyer. The invention uses the Hopkinson rod as the sensitive element, has huge measurement range and sensitive element strength, and satisfies the need to accurately measure the spatial distribution of underwater explosion shock waves and bubble jet loads under the harsh measurement conditions of near-field underwater explosions.

Description

technical field [0001] The invention belongs to the technical field of underwater explosion pressure sensor design, in particular to a cross-array underwater explosion pressure load spatial distribution measurement device and system. Background technique [0002] With the rapid development of underwater weapon guidance technology, it is more and more likely that underwater weapons will form a very near-field explosion or even a contact explosion near the ship structure. Forecasts and measurements place higher demands. The current free-field pressure load measurement technology is relatively mature and can accurately measure free-field explosion pressure. However, for the measurement of the spatial distribution of pressure load on the surface of structures under near-field underwater explosion conditions, mature and reliable measurement methods have not yet been formed at home and abroad. [0003] Piezoelectric or piezoresistive wall pressure sensors packaged with sensitive ...

AI Technical Summary

Problems solved by technology

The current free-field pressure load measurement technology is relatively mature and can accurately measure free-field explosion pressure. However, for the measurement of the spatial distribution of pressure load on the surface of structures under near-field underwater explosion conditions, mature and reliable measurement methods have not yet been formed at home and abroad.

[0003] Piezoelectric or piezoresistive wall pressure sensors packaged with sensitive materials such as quartz crystals and piezoelectric ceramics have small measurement ranges, frequency responses that cannot meet the high-frequency component acquisition of underwater explosions, and the strength of sensitive components cannot withstand the severe conditions of underwater explosions. , high cost and other disadvantages; because of its installation and fixing method pasted on the surface of the structure, the thin-film sensor is usually difficult to withstand the harsh environment such as the extremely high pressure peak of the underwater near-field explosion shock wave, the impact of detonation products, and high temperature conditions.

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