Pneumatic accelerating impact experiment method

An experimental method and technology of accelerating tubes, applied in the field of impact experiments, can solve problems such as unsimplified test methods, and achieve the effects of accurate positioning, convenient adjustment, and convenient operation

Active Publication Date: 2013-12-25
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome that there is no effective test method at present, and the impact test of a small mass projectile below 0.5kg at a speed higher than 80m / s or the impact test of a disposable mass of 5kg impactor at a speed of 8m / s or less is usually used. However, this type of test method can overcome the problem that the current test method cannot easily and efficiently evaluate the dangerous response of explosives with a predetermined configuration or a plexiglass window when an object with a mass of 1kg to 5kg is accidentally hit at a speed of 8m / s to 80m / s Defects, to provide a not only accurate positioning, simple steps, easy to operate, but also the impact body can be used repeatedly, can effectively test in the range of 8m / s ~ 80m / s speed (instant speed 28.8km ~ 288km), 1kg ~ 5kg weight It is an aerodynamic accelerated impact test method that can effectively test the harmful effects of unexpected events such as 5kg objects hitting plexiglass windows or other materials.

Method used

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Embodiment 1

[0030] Such as figure 1 As shown, the aerodynamic acceleration impact test device used in the present invention is mainly composed of a base 1 on which a loading assembly is also arranged. The loading assembly includes an acceleration tube 3 . In order to firmly support the acceleration tube 3 , a bracket 11 is provided on the base 1 , and the acceleration tube 3 is fixed on the bracket 11 . At the same time, a large-mass impact body 5 is installed inside the acceleration tube 3 , and the front end of the acceleration tube 3 is an open end, and the large-mass impact body 5 is arranged at the rear end of the acceleration tube 3 . The high-mass impact body 5 of the present invention is a high-mass hammer or a high-mass projectile, and may also be a component similar to the high-mass hammer or high-mass projectile. In order to provide power to the large-mass impactor 5 conveniently, a high-pressure air chamber 4 is also provided at the connection of the right end face of the acc...

Embodiment 2

[0038] Such as figure 2 As shown, the overall structure of this embodiment is basically the same as that of Embodiment 1, the only difference is that a force transmission mechanism is provided at the front end of the measured body 6, and the force transmission mechanism includes a force transmission mechanism arranged at the front end of the measured body 6 The force transmission mechanism 9 and the force transmission structure support 12 supporting the force transmission mechanism 9, the force transmission mechanism 9 includes a dowel rod and a buffer connected to the dowel rod. The test object 6 hit by the force transmission mechanism 9 is set on the fixing fixture 8 , and the dowel bar can also move accurately left and right along the force transmission structure support 12 .

[0039] In this embodiment, a force transmission mechanism needs to be installed before the test body 6 is installed on the fixing fixture 8 and the fixing fixture 8 is installed on the upper right e...

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Abstract

The invention discloses a pneumatic accelerating impact experiment method which is characterized by comprising the following steps: (1) installing and debugging a pneumatic accelerating impact experiment device; (2) installing and debugging a test instrument; (3) inflating a high-pressure air chamber; (4) starting the test instrument, switching on a power supply of a solenoid valve simultaneously, and accelerating a massive impact body along an accelerating tube to make the impact body impact a tested body; (5) reading a test result through the test instrument. The method has simple steps and is conveniently operated, the massive impact body can be reused, and the test instrument can be used for reading various dynamic impact parameters, so that the method can be used for effectively testing the harmful effects of accidental impact of heavy objects of 2kg-5kg to explosives, or of accidents in which objects of 1kg-5kg impact organic windows in the speed range of 8m / s-80m / s (namely the speed per hour is 28.8km-288km). Thus, the method is suitable for promotion and use.

Description

technical field [0001] The invention relates to an impact test method, in particular to an aerodynamic acceleration impact test method. Background technique [0002] In explosive transportation accidents or other accidents, gunpowder and explosives will cause accidents such as combustion and explosion due to the accidental impact of large-scale objects, resulting in heavy casualties and property losses. In addition, the plexiglass windows of automobiles and trains running at high speed may also cause accidents due to accidental impact of objects of a certain mass, causing heavy casualties and property losses. [0003] Within the speed range of 8m / s~80m / s (instantaneous speed 28.8km~288km), the accidental impact of reusable and accurately positioned 2kg~5kg heavy objects on explosives or other materials, or the impact of 1kg~5kg objects on organic matter There is no effective test method for the harmful effects of accidents such as glass windows. At present, the usual pract...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/307
Inventor 花成于劭钧张艳丽赵学峰李宗兵
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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