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Test system for simulating anti-explosion characteristic of target under confining pressure condition

A technology of anti-explosion characteristics and test system, applied in the field of test system, can solve the problem of inability to realize explosion disturbance loading and other problems

Pending Publication Date: 2022-06-28
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses the stress wave generated by the impact of the bar to load the specimen, but is limited by the small size of the bar, so it can only realize the impact loading of the small-sized specimen under the confining pressure state, and it cannot be realized without explosive loading. Real Explosion Disturbance Loading

Method used

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  • Test system for simulating anti-explosion characteristic of target under confining pressure condition
  • Test system for simulating anti-explosion characteristic of target under confining pressure condition
  • Test system for simulating anti-explosion characteristic of target under confining pressure condition

Examples

Experimental program
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Effect test

Embodiment 1

[0026] like figure 1 As shown, a test system for simulating the anti-knock characteristics of a target under confining pressure conditions of the present embodiment includes a target 6 in the shape of a cuboid, a plurality of pressure plates 3 are arranged around the target 6, and a plurality of pressure plates 3 are enclosed in a rectangular frame shape , a number of support bases 1 are arranged on the periphery of the pressure plate 3, and a number of support bases 1 are enclosed in a rectangular frame shape, and a number of flexible oil bags 4 are arranged between the support base 1 and the pressure plate 3, and each pressure plate 3 corresponds to a flexible oil bag 4, each Each flexible oil bag 4 is connected to a pressing machine through pipelines.

[0027] In this embodiment, the support base 1 is fixedly arranged on the guide rail 2 at the bottom, the two sides of the flexible oil bag 4 are in contact with the corresponding pressure plate 3 and the support base 1 respe...

Embodiment 2

[0030] combine figure 2 As shown in the figure, the structure of the test system of this embodiment is basically the same as that of the first embodiment. Matching rollers, such as image 3 As shown, the support base 1 is slidably connected to the guide rail 2 through rollers, and the guide rail 2 is provided with several positioning holes (not shown in the figure) along the sliding direction of the support base 1. The positioning holes can be inserted into the positioning holes 7; The base 1 slides on the guide rail to control the distance between the two relative support bases 1, which can meet the placement of targets 6 of different sizes. When the support base 1 slides to a suitable position, insert the limiter into the positioning hole closest to the support base 1 The pin 7 and the limit pin 7 can abut on the side of the support base 1 away from the flexible oil bag 4 , so that the support base 1 is fixed on the guide rail 2 .

[0031] The support base 1 is provided w...

Embodiment 3

[0034] The structure of the test system of this embodiment is basically the same as that of the second embodiment, the difference is that the pressure plates 3 are only symmetrically arranged on opposite sides of the target 6 in this embodiment, which can simulate the unidirectional loading of the target 6 .

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Abstract

The invention relates to a test system for simulating anti-explosion characteristics of a target under a confining pressure condition, which comprises the target and an explosion source arranged at the top of the target, the test system further comprises a plurality of pressing plates symmetrically arranged on the periphery of the target, supporting bases arranged on the sides, away from the target, of the pressing plates, flexible oil bags arranged between the pressing plates and the supporting bases, and a pressing machine connected with the flexible oil bags. The two sides of the flexible oil bag make contact with the pressing plate and the supporting base respectively, and the side, away from the flexible oil bag, of the pressing plate makes contact with the target. A plurality of flexible oil bags symmetrically arranged on the periphery of a target are pressurized through a pressing machine, and the flexible oil bags expand to apply confining pressure to the target. An explosion source is arranged on the target, impact waves act on the target in a pressed state, the anti-explosion characteristic of the target under the confining pressure condition is simulated, and dynamic and static combined loading of the target can be achieved.

Description

technical field [0001] The invention relates to a test system for simulating the anti-explosion characteristics of a target under confining pressure conditions, and belongs to the technical field of explosion damage research under confining pressure conditions. Background technique [0002] With the rapid development of earth-penetrating weapons, their strike effectiveness has become higher and higher, and the threat to protection projects and important military facilities has become more and more serious. As the penetration depth of earth-penetrating weapons increases, their damage to deep-ground protection projects becomes more and more severe. Under the action of the overlying strata, in-depth protection projects such as tunnels and chambers are always in a state of high confining pressure, and the confining pressure will have an important impact on the dynamic mechanical behavior of the protective structure. [0003] At present, there are not many studies on target conf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/313G01N3/02
CPCG01N3/313G01N3/02G01N2203/001
Inventor 刘晨康吴红晓王振高飞于思远李胡军孙庆亚姚箭
Owner NANJING UNIV OF SCI & TECH
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