Adjustable Vertical Hopkinson Incident Strut Beam Guide and Method of Use

Abstract

The invention relates to an adjustable vertical Hopkinson incident pressure bar bundle guide device which comprises a base, wherein a retainer for vertically arranging an incident pressure bar bundle in a penetrating manner is horizontally arranged on the base; the base and the horizontal plane are driven by a horizontal adjustment mechanism to adjust the motion relative to the horizontal plane; the retainer and the base are driven by a transverse adjustment mechanism and a longitudinal adjustment mechanism respectively to realize sliding adjustment on transverse and longitudinal positions of the retainer. The adjustable vertical Hopkinson incident pressure bar bundle guide device can realize position adjustment on the vertically arranged incident pressure bar bundle in the horizontal direction, the transverse direction, the longitudinal direction and the corner direction and is simple in whole structure, small in size, detachable and convenient to operate.

Description

technical field [0001] The invention provides an adjustable vertical Hopkinson incident pressure rod beam guiding device and a use method thereof, especially for testing the mechanical properties of materials, and belongs to the mechanical field. Background technique [0002] The one-dimensional SHPB (Hopkinson pressure bar) experimental device is the impact loading device used in the current experiment. The SHPB experimental device can launch projectiles at high speed and collide with the test material to load. The SHPB experimental test system usually consists of incident, transmission, energy-absorbing rods, and The impact force is applied to the incident rod after the projectile collides with the incident rod. The impact force passes through the incident rod, the test piece, and finally spreads to the absorbing rod. The buffer device installed at the rear end of the absorbing rod is to absorb the impact force Cushioning and absorption; in the SHPB system, the incident, t...

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Problems solved by technology

[0002] The one-dimensional SHPB (Hopkinson pressure bar) experimental device is the impact loading device used in the current experiment. The SHPB experimental device can launch projectiles at high speed and collide with the test material to load. The SHPB experimental test system usually consists of incident, transmission, energy-absorbing rods, and The impact force is applied to the incident rod after the projectile collides with the incident rod. The impact force passes through the incident rod, the test piece, and finally spreads to the absorbing rod. The buffer device installed at the rear end of the absorbing rod is to absorb the impact force Cushioning and absorption; in the SHPB system, the incident, transmission, and energy-absorbing rods all need to be supported by the support device. At the same time, according to the principle of stress waves, when the compression rods collide, the collision surfaces need to be well combined. When the gap is too large or the impact surface is not completely matched, the experiment will produce a large error or even a mistake. At present, the Hopkinson pressure bar support device usually uses gaskets to adjust its height, and the bottom surface uses bolts to adjust its left and right joint surfaces. Difficult to adjust in place, waste a lot of experiment time, and low precision

[0003] In recent years, the three-dimensional SHPB compression rod technology has begun to rise, and a single incident rod has become a rod bundle composed of three compression rods. (Hopkinson pressure bar) support device has not met the requirements, and at the same time, the three-dimensional SHPB pressure bar may be designed to be placed horizontally or vertically

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