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Dynamic sensor based broken stone particle simulation test system and method

A simulation test and sensor technology, applied in the direction of instruments, analytical materials, etc., can solve the problems of restricting the development of the theory related to dynamic deformation of scattered bodies, lack of meso-observation methods, etc., and achieve the effect of flexible use, small size, and reduced interference.

Inactive Publication Date: 2017-11-17
TONGJI UNIV
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Problems solved by technology

Due to the lack of effective mesoscopic observation methods, the existing research can only infer the deformation mechanism of bulk media based on macroscopic phenomena, which restricts the development of theories related to dynamic deformation of bulk bodies.

Method used

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  • Dynamic sensor based broken stone particle simulation test system and method
  • Dynamic sensor based broken stone particle simulation test system and method

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Embodiment Construction

[0029] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] The purpose of the present invention is to provide a simulation test system based on dynamic sensor crushed stone particles. By implanting multiple sensors in the crushed stone particles, the real-time monitoring of the movement process of a single crushed stone particle under the action of power can be revealed from a microscopic point of view. The dynamic characteristics of bulk materials, in order to achieve this goal, the following technical solutions are adopted, such as figure 1 The system structure shown includes:

[0031] Model test box: It is a rectangular box, which is filled with a scale gravel model to simulate the roadbed, and the upper surface is equipped with rails;

[0032] High-frequency loading device: including a test bench, a frame set on the test bench, and an exciter set on the frame and in contact with the rails...

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Abstract

The invention relates to a dynamic sensor based broken stone particle simulation test system and method. The system and method are used to observe the motion behavior of scattered particles when asymmetric dynamic deformation happens in a railroad bed. The system comprises a simulation test box, wherein a proportional broken stone model, which is used to simulate a bed, is filled in the simulation test box; a high frequency loading apparatus, which is used to simulate the dynamic load that is generated during the travelling process of a high speed train and is applied on the bed model; a broken stone particle collecting apparatus, which comprises a power supply, a data collector connected to the power supply, and multiple broken stone particles with built-in dynamic sensors, wherein the broken stone particles with built-in dynamic sensors are mixed into the proportional broken stone model and communicate with the data collector, and the data collector is installed on the simulation test box; and a work station, which is used to control the loading amplitude and frequency of a vibration exciter and obtain the data of the dynamic sensors. Compared with the prior art, the system has the advantages of suitability for real time supervision and broken stone scattered materials, small size, and accurate detection.

Description

technical field [0001] The invention relates to the field of bulk dynamics, in particular to a simulation test system and test method based on dynamic sensor crushed stone particles. Background technique [0002] The high-speed railway foundation is filled in layers with graded gravel materials of various particle sizes, and is a typical bulk medium. Due to the highly random and inhomogeneous mechanical properties of bulk materials, the overall dynamic characteristics of the subgrade are very complex. With the further acceleration of high-speed trains, the problem of uneven deformation of bulk roadbed materials is highlighted. Due to the lack of effective mesoscopic observation methods, existing research can only infer the deformation mechanism of bulk media based on macroscopic phenomena, which restricts the development of theories related to dynamic deformation of bulk bodies. [0003] According to the present invention, a gravel granule with built-in multiple dynamic se...

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Application Information

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IPC IPC(8): G01N15/00
CPCG01N15/00
Inventor 张骁肖军华张德付龙龙熊聪聪殷剑光
Owner TONGJI UNIV
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