A guide adjustment device for a three-dimensional Hopkinson transmission compression rod and its application method

Abstract

The invention relates to a guide adjustment device for a three-dimensional Hopkinson transmission compression rod, comprising a vertically arranged main support frame and an auxiliary support frame, the main support frame and the auxiliary support frame are coaxial annular structures of different sizes, and the The circumference of the main support frame and the auxiliary support frame are fixedly connected with three load-bearing parts for obliquely piercing the pressure rods and realizing the axial sliding of the pressure rods. The axes of the passages of two adjacent load-bearing components on the top are perpendicular to each other. The guide adjustment device of the three-dimensional Hopkinson transmission pressure rod can be well adjusted, has a buffer function, has low cost, and has high innovation.

Description

technical field [0001] The invention provides a guide adjustment device for a three-dimensional Hopkinson transmission pressure rod and a method for using the same, especially for testing the mechanical properties of materials, and belongs to the mechanical field. Background technique [0002] The one-dimensional SHPB (Hopkinson transmission pressure bar) experimental device is the current experimental impact loading device. 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 an incident rod, a transmission rod, and an energy-absorbing After the projectile collides with the incident rod, an impact force is applied to the incident rod. The impact force passes through the incident rod and the test piece, and finally spreads to the energy-absorbing rod. The buffer device arranged at the rear end of the energy-absorbing rod buffer and absorb the impact force; in the SH...

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Problems solved by technology

[0002] The one-dimensional SHPB (Hopkinson transmission pressure bar) experimental device is the current experimental impact loading device. 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 an incident rod, a transmission rod, and an energy-absorbing After the projectile collides with the incident rod, an impact force is applied to the incident rod. The impact force passes through the incident rod, the test piece, and finally spreads to the energy-absorbing rod. The buffer device arranged at the rear end of the energy-absorbing rod buffer and absorb the impact force; in the SHPB system, the incident rod, transmission rod, and energy-absorbing rod all need to be supported by the support device. If the gap is too large or the impact surface does not match completely during the collision, the experiment will produce a large error or even a mistake. In recent years, the three-dimensional SHPB pressure rod technology has begun to rise, and a single incident rod has become a rod composed of three pressure rods. beam, the adjustment requirements of its incident rod are still consistent with those of the one-dimensional SHPB (Hopkinson transmission pressure rod).

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