Shear friction test device for pressure-bearing granular medium under vibration condition

A particle medium and testing device technology, which is applied to measuring devices, mechanical devices, instruments, etc., can solve calculation errors, force transmission characteristics of pressurized particulate matter, and detection of shear friction force. Effective test methods have not yet been obtained, etc. problem, to achieve the effect of simple structure

Inactive Publication Date: 2017-02-22
YANSHAN UNIV
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Problems solved by technology

The measurement of the shear friction force of particulate matter generally adopts direct shear instrument, ring shear or triaxial shear, etc. These test methods are generally carried out under static load conditions, and the direct shear instrument exists due to the

Method used

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  • Shear friction test device for pressure-bearing granular medium under vibration condition
  • Shear friction test device for pressure-bearing granular medium under vibration condition
  • Shear friction test device for pressure-bearing granular medium under vibration condition

Examples

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Embodiment 1

[0032] This embodiment provides a device for testing the shear friction of pressure-bearing granular media under vibration conditions, such as Figure 1-5 As shown, the experimental box 1 is a groove-shaped experimental box, the top of the experimental box 1 is fixed with a fixed box 5 by bolts, and the middle part of the fixed box 5 is provided with a circular through hole with a diameter of 20 mm. The gap is 0.1 mm to ensure that the granular medium 11 will not overflow from the gap when the pressure is applied; the bottom of the experiment box 1 is fixed with a guide rail 2 through bolt connection, and the upper end of the guide rail 2 is provided with a slider 3 that can slide along the guide rail 2. 3. A shearing box 4 is fixed on the upper end by bolts. The middle part of the top of the shearing box 4 is processed with a long slot with a width of 20 mm and a length of 35 mm. The slot depth is 20 mm. The fixed box 5 is assembled with the shearing box 4 Finally, the elonga...

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Abstract

The invention discloses a shear friction test device for a pressure-bearing granular medium under a vibration condition. The shear friction test device comprises a vibration shear device and a data detection and analysis device. The vibration shear device comprises a test box, a vibration device, a punch and a side pushing device. The data detection and analysis device comprises a pressure sensor, a data acquisition system and a computer. In testing of the shear friction force of the granular medium, the solid granular medium to be tested is poured into a shear box, then the punch is placed on the upper surface of the granular medium, the vibration device is started, and the punch goes downwards to push; the shear box shears the granular medium under the action of lateral pushing, the sensor inputs shear displacement and force of the granular medium into the data acquisition system, and shear friction on the granular medium is recorded and analyzed by the computer. The shear friction test device can test influences of vibration excitation on the shear friction force of the granular medium under the pressure condition, thus revealing friction characteristics of the granular medium under the vibration condition.

Description

technical field [0001] The invention relates to the technical field of friction testing, in particular to a device for testing shear friction of pressure-bearing granular media under vibration conditions. Background technique [0002] Tribometers are mostly aimed at solid materials, and measure relevant tribological parameters under the conditions of point contact, line contact or surface contact. The measurement of the shear friction force of particulate matter generally adopts direct shear instrument, ring shear or triaxial shear, etc. These test methods are generally carried out under static load conditions, and the direct shear instrument exists due to the In the process, it gradually shrinks and causes calculation error defects. [0003] At present, under the condition of vibration, there is no effective test method for the detection of force transmission characteristics and shear friction of pressurized granular materials. Contents of the invention [0004] The obj...

Claims

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Application Information

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IPC IPC(8): G01N19/02
CPCG01N19/02
Inventor 曹秒艳赵长财王鹏左苗苗
Owner YANSHAN UNIV
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