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A Specimen Clamping Device for Large Diameter Split Hopkinson Pressure Bars

A Hopkinson pressure bar and separate technology, which is applied in the field of specimen clamping devices for large-diameter separated Hopkinson pressure bars, can solve the problems of low positioning accuracy and insufficient support reliability of the specimen clamping device. , to achieve stable clamping effect

Active Publication Date: 2019-09-03
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a large-diameter split-type Hopkinson pressure rod tester that can solve the problems of insufficient support reliability and low positioning accuracy of the specimen clamping device in the prior art. clamping device

Method used

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  • A Specimen Clamping Device for Large Diameter Split Hopkinson Pressure Bars
  • A Specimen Clamping Device for Large Diameter Split Hopkinson Pressure Bars
  • A Specimen Clamping Device for Large Diameter Split Hopkinson Pressure Bars

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with accompanying drawing:

[0027] Such as figure 1 As shown in , it is a schematic structural diagram of the specimen clamping device of the large-diameter split Hopkinson compression bar.

[0028] The specimen clamping device of the large-diameter separated Hopkinson compression bar of the present invention includes a fixed end 1 and a sliding end 2, the fixed end 1 includes a fixed sleeve 11, and a fixed collar 13 is sleeved on the fixed sleeve 11. A number of fixing holes 131 are evenly distributed on the collar 13; the fixing sleeve 11 is composed of two semicircular fixing sleeve plates 111 spliced ​​together.

[0029] The sliding end 2 includes a sliding sleeve 21 , and the sliding sleeve 21 is formed by splicing two semicircular sliding sleeve plates 211 . Both ends of the fixed sleeve 11 and the sliding sleeve 21 are respectively sleeved with snap rings 12, and the snap rings 12 are formed ...

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Abstract

The invention discloses a specimen clamping device for a large-diameter separated Hopkinson compression bar, which includes a fixed end and a sliding end, the fixed end includes a fixed sleeve, and a fixed collar is sleeved on the fixed sleeve. There are several fixing holes on the ring; the sliding end includes a sliding sleeve, and the sliding sleeve is connected to the sliding collar through a number of evenly opened chute slots; A positioning hole is opened on the collar corresponding to the position of the slider, and a positioning piece is installed in the positioning hole; a plurality of connecting holes are opened on the sliding collar, and the connecting holes and the fixing holes are respectively connected with two ends of the elastic element. The invention can solve the problems of insufficient support reliability and low positioning accuracy of the specimen clamping device in the prior art, has high reliability, small randomness and good versatility, and can be flexibly adjusted and adjusted according to the specimen size and specimen strength. Assembly, and easy to disassemble and assemble; the pre-clamping force can be adjusted in a large range and has strong applicability.

Description

technical field [0001] The invention relates to a test piece clamping device, in particular to a test piece clamping device for a large-diameter separated Hopkinson compression bar. Background technique [0002] The separate Hopkinson pressure bar device is currently the main test method for testing the dynamic stress-strain response relationship of various engineering materials in the strain rate range from 100 / s to 10000 / s. It can be used in national defense, aviation, aerospace, automobiles, high-speed rail, In the fields of ships, weapons, etc., the test and characterization of the dynamic mechanical properties of materials for structural explosion resistance, impact resistance, collision and lightweight design and analysis requirements. [0003] When testing heterogeneous materials such as concrete, rock, foam, etc., in order to contain enough microstructures, the size of the specimen must be large enough, so a separate Hopkinson compression bar device with a large diam...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/04
Inventor 敬霖刘凯
Owner SOUTHWEST JIAOTONG UNIV
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