Unlock instant, AI-driven research and patent intelligence for your innovation.

Experimental device and method for studying motion characteristics of granular materials under vibration loads

A technology of motion characteristics and granular materials, applied in the direction of analyzing materials, instruments, etc., to achieve the effect of large device size, simple device preparation and installation, and safe operation

Inactive Publication Date: 2019-07-12
CENT SOUTH UNIV
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is impossible to describe the overall deformation behavior of the material through the specific particle displacement mode, which also shows that the empirical method based on phenomenology cannot explain the relationship between the movement law of the granular material and its deformation in essence.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Experimental device and method for studying motion characteristics of granular materials under vibration loads
  • Experimental device and method for studying motion characteristics of granular materials under vibration loads

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The test device provided by the present invention for the study of the motion characteristics of granular materials under vibration loads includes a frame body 1, a test box 2, a numerical control system 3, a computer 4, a smart camera 5, a first servo motor 6 and a second servo motor 7, Wherein the test box 2 is located at the bottom of the frame body 1, the first servo motor 6 is pivotally connected to the top of the frame body 1 through the pull rod 8, the first servo motor 6 can move left and right along the top of the frame body 1, and the first servo motor 6 is set at the position corresponding to the test chamber 2, the second servo motor 7 is connected with the first servo motor 6 and drives the first servo motor 6 to move, the bottom of the first servo motor 6 is connected with a connecting rod 9, and the connecting rod 9 The bottom end is equipped with a loading pressure plate 10, the first servo motor 6 can load the sample 11 in the test box 2 through the load...

Embodiment 2

[0054] The breccia is used in the first embodiment, and the compaction process is realized by setting the fixed loading frequency from the initial laying thickness of 400mm to 350mm by vibratory compaction. On the basis of the first embodiment, the implementation of steps two and six can be changed Way. Select the coarse-grained material as round gravel, vibrate and compact from the initial laying thickness of 450mm to 350mm, set the fixed loading pressure to 20kPa, and measure the vertical displacement during the compaction process. When the settlement of the round gravel in the test chamber 2 reaches 100mm stop loading. Repeat other steps to obtain particle motion trajectory (translation and rotation).

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an experimental device and method for studying motion characteristics of granular materials under vibration loads. The experimental device includes a frame body, an experimental box, a numerical control system, a computer, an intelligent camera, a first servo motor, and a second servo motor, wherein the experimental box is located on the lower part of the frame body, the first servomotor is connected to the top of the frame body in a pin joint mode through a pull rod, the experimental method comprises the steps that 1, the experimental box is placed in a laboratory; 2,materials are filtrated; 3, a loading pressure plate is assembled; 4, the loading pressure plate is horizontally placed in the experimental box; 5, force and displacement changes are collected in realtime; 6, changing of the loading location is realized; 7, a smart camera is arranged at the front of a glass; 8, loading is stopped when a specified value is reached; and 9, translation and rotationconditions of granules are obtained. The experimental device and method have the beneficial effects that motion trails of the granules under the action of vibration loads can be accurately calculated,that are translation and rotation conditions of the granules.

Description

[0001] The invention relates to a test device and a method for studying the movement characteristics of granular materials, in particular to a test device and a method for studying the movement characteristics of granular materials under vibration loads. Background technique [0002] At present, in the construction of high-quality rapid transportation networks with high-speed railways and expressways as the main body, higher requirements are put forward for the construction of road (railway) projects. As the main part of the road (railway) project, the traditional compaction technology of the subgrade can no longer meet the development needs of the current road (railway) traffic. Subgrade intelligent compaction technology plays an important role in improving and ensuring the quality of road (railway) construction and improving the durability of the project. [0003] Subgrade compacted soil is essentially a coarse-grained material. Granular materials are aggregates of interact...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/00
CPCG01N15/00
Inventor 聂志红刘顺凯龚健
Owner CENT SOUTH UNIV