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A separate Hopkinson rod impact test device

A Hopkinson rod and impact test technology, which is applied in the direction of testing material strength, measuring devices, and analyzing materials by using one-time impact force, can solve the problems that the sample state cannot be displayed, the error of test results, etc., and achieve convenient material collection and easy operation , the effect of easy to use

Active Publication Date: 2021-06-01
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Technical problem: The purpose of this invention is to provide a separate Hopkinson rod impact test device, which overcomes the large error in test results caused by the difficulty of removing air in the separate Hopkinson rod impact test of bulk / soft materials , and the problem that the sample state cannot be displayed during the test process, so that more reasonable bulk / soft material test data can be obtained and the test state during the impact test process can be displayed

Method used

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  • A separate Hopkinson rod impact test device
  • A separate Hopkinson rod impact test device
  • A separate Hopkinson rod impact test device

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Embodiment 1

[0037] Embodiment 1 The equipment tested in this embodiment is that the Hopkinson bar is a Φ50mm test equipment, and the sample is a calcareous sand bulk material of 2.5 to 10 cm (here, taking 5 cm as an example), and the minimum particle of the calcareous sand is 0.25 mm .

[0038] A separate Hopkinson bar impact test device, which is suitable for the Hopkinson bar impact test of bulk / soft materials, including a casing 1, a nut 2 for fixing the sample pad, an exhaust part, and a sample pad Block 4 and the casing supporting part, wherein the sample pad 4 is two pieces, which are respectively located on the left and right sides of the inside of the casing 1, and the sample 5 is placed in the sample chamber between the two sample pads 4, and the sample is fixed. The nuts 2 of the spacer are distributed on the wall of the casing 1 to fix the sample spacer 4; the exhaust part is an exhaust hole 3 or an exhaust groove 9, which communicates with the external space of the sample cham...

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Abstract

The invention discloses a separate Hopkinson bar impact test device, which is suitable for the Hopkinson bar impact test of bulk / soft materials, comprising a casing (1) and a nut (2) for fixing a sample pad , exhaust components, sample pads (4) and casing supporting parts, the sample pads (4) are respectively located on the left and right sides of the inside of the casing (1), between the two sample pads (4) It is a sample chamber, and the nuts (2) for fixing the sample pad are distributed on the wall of the casing (1); the exhaust part is an exhaust hole (3) or an exhaust groove (9); the device mainly It solves the problem that the bulk / soft material cannot be fixed in the separated Hopkinson rod impact test, and the air in the casing cannot be discharged when the sample in the casing is impacted at high speed, which affects the test result. At the same time, it can display the sample during the test State, and the production process is simple, reliable, easy to use, easy to operate.

Description

technical field [0001] The invention relates to a separated Hopkinson bar impact test device, which belongs to the technical field of Hopkinson bar impact test. Background technique [0002] At present, the Hopkinson rod is mainly used for the impact test of solid materials such as rock mass and metal. For bulk / soft materials such as sand, rubber, soft gel, etc., it cannot overcome the gravity to form a fixed status. hold, while it is difficult to conduct experiments in Hopkinson rods. Casings and pads are used to fix the bulk materials during the test, but in order to prevent the leakage of bulk materials, tight contact between the pads and the casing is required, which makes it difficult to discharge the air in the sample, especially during the impact process , The bulk / soft material has a large compression deformation, and the air cannot be discharged, which may cause a large error in the test result; at the same time, the general casing is made of steel and other materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/02G01N3/30
Inventor 秦伟戴国亮龚维明张程锋
Owner SOUTHEAST UNIV
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