Test system and test method for underwater explosion impact equivalent loading experiment

A technology of loading experiments and underwater explosions, applied in the field of impact dynamics, can solve the problems of high requirements for experimental hardware facilities, high experimental costs, and low experimental efficiency, and achieve improved safety, high repeatability, and low experimental costs. Effect

Inactive Publication Date: 2014-09-10
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Both of these experimental methods require high experimental costs, high requirements for experimental hardware facilities, low experimental efficiency, and a considerable degree of danger.

Method used

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  • Test system and test method for underwater explosion impact equivalent loading experiment
  • Test system and test method for underwater explosion impact equivalent loading experiment
  • Test system and test method for underwater explosion impact equivalent loading experiment

Examples

Experimental program
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Effect test

Embodiment 1

[0054] Bullet 2 adopts aluminum cylindrical bullets, the speeds are respectively 10m / s, 20m / s, 30m / s, 40m / s and 50m / s; the lengths are respectively 5cm, 4cm, 3cm, 2cm, 1cm. 2 In this way, 5 tests were performed according to 10m / s, 20m / s, 30m / s, 40m / s, and 50m / s, and 25 tests were performed.

[0055] Described bullet velocity measuring system 11 is made up of two sets of time recorders 3 that are arranged in parallel, time recorder 3 includes two sheets of conductive paper and a dual-channel time on-off recorder, the conductive layers of the two conductive papers do not touch, and the two conductive papers Connect with the dual-channel time on-off recorder respectively. The conductive paper of the two sets of time recorder 3 is arranged in parallel at an interval of 50 cm. The conductive paper of the time recorder 3 is set on the flight path of the bullet 2. When the bullet 2 passes through the first set of time When the conductive paper on the recorder 3 is in contact with the...

Embodiment 2

[0059] The bullet 2 is made of aluminum foam, and the speed is 10m / s, 20m / s, 30m / s, 40m / s, and 50m / s respectively; the length is 5cm, 4cm, 3cm, 2cm, 1cm, and each length In this way, 5 tests were performed at 10 m / s, 20 m / s, 30 m / s, 40 m / s, and 50 m / s, and 25 tests were performed.

[0060] Described bullet velocity measuring system 11 is made up of two sets of time recorders 3 that are arranged in parallel, time recorder 3 includes two sheets of conductive paper and a dual-channel time on-off recorder, the conductive layers of the two conductive papers do not touch, and the two conductive papers Connect with the dual-channel time on-off recorder respectively. The conductive paper of the two sets of time recorder 3 is arranged in parallel at an interval of 78cm. The conductive paper of the time recorder is set on the flight path of the bullet. When the bullet passes through the first set of time recorder 3 When the conductive paper on the conductive paper, the conductive layer ...

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Abstract

The invention discloses a test system and a test method for an underwater explosion impact equivalent loading experiment. The test system comprises a bullet emission system, a bullet speed measurement system, a water target cabin system and a pressure measurement system, wherein the dynamic energy of a bullet is converted to an impact load in a water target cabin by colliding the bullet with the water target cabin system, finally the impact load is loaded on a test piece to be tested, and a pressure time interval is measured by the pressure measurement system. The test system and the test method disclosed by the invention are capable of greatly realizing equivalent underwater explosion equivalent loading in laboratory conditions, and has the advantages of being high in controllability, simple to operate, low in experiment danger, high in repeatability, low in experiment cost, and the like.

Description

technical field [0001] The invention belongs to the field of impact dynamics, and in particular relates to an underwater explosion impact equivalent loading experimental testing system and a testing method thereof, which are used for underwater impact dynamics and experimental mechanics testing experiments. Background technique [0002] In order to improve the survivability of underwater equipment, its protective structure has always been the focus of research. In recent years, a series of new composite materials and sandwich plate structures have been proposed. There are a large number of references for the research on new structures and materials based on the Hopkinson rod experiment technology, but the research on them under the impact of underwater explosions is still limited. Fewer, and the experimental means are more limited. Due to the difficulty of theoretical research on the shock response of structures and materials to underwater explosions, only experimental and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/08G01N3/313
Inventor 杨一方郭锐
Owner NANJING UNIV OF SCI & TECH
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