Low-speed penetration experiment device based on split Hopkinson pressure bar

Abstract

The invention discloses a low-speed penetration experiment device based on a split Hopkinson pressure bar. The low-speed penetration experiment device comprises a test platform, and a launching unit,a muzzle diameter converter, a target front slide rail speed measurement assembly, a target chamber unit, a bullet recycling box, a combined bullet and a target rear slide rail speed measurement assembly which are mounted on the test platform; the muzzle diameter converter is additionally arranged at the muzzle of the launching unit, and the combined bullet is pushed into the muzzle diameter converter and can be launched under the driving of the launching unit; the target chamber unit is arranged behind the muzzle diameter converter, a target plate is installed in the target chamber unit, andthe target front slide rail speed measurement assembly and the target rear slide rail speed measurement assembly are arranged in front of and behind the target plate respectively and used for limitingthe flight path of the combined bullet and detecting the speed of the combined bullet before and after target penetration; the bullet recycling box is arranged behind the target rear slide rail speedmeasurement assembly and the target chamber unit and used for recycling the combined bullets penetrating through the target.

Description

technical field [0001] The invention relates to the technical field of material impact dynamics experiments, in particular to a low-speed penetration experiment device based on a separate Hopkinson pressure bar. Background technique [0002] Penetration refers to the movement of the projectile hitting the target at high speed to produce a destructive effect. If the projectile penetrates the metal target, it is also called armor-piercing. Penetration and armor-piercing have always been the focus of research in protection and weapon engineering. The area of ​​shock and crash dynamics is also a hot topic. At present, there are many types of experimental devices used to study penetration problems, such as ballistic guns / gun launch platforms that use gunpowder explosion to drive bullets. The launch speed can be changed by adjusting the amount of gunpowder, bullet diameter and weight, and can achieve 100-1500m / s General-high-speed penetration; first- and second-level light gas gu...

AI Technical Summary

Problems solved by technology

For low-speed impact and penetration test devices below 100m / s, large-scale gravity drop weight test machines are commonly used to realize them, but the vertical frame of the device is high (>10m), and it is difficult to realize indoors

The separated Hopkinson pressure bar device is widely used in the dynamic mechanical performance test of materials. By adjusting the air pressure of the air chamber and the weight of the bullet, the repeatable impact loading of 40m / s can be achieved indoors, but it cannot be directly used for penetration and impact tests. Research

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