Particle dynamic response test device and method based on electromagnetic control

Abstract

The invention provides a particle dynamic response test device and method based on electromagnetic control, which can realize a particle column natural collapse test without interference and obtain accurate and real test data. The particle kinetic response test device includes: a plurality of particle units, each of which includes: an embedding body capable of generating magnetism under the action of electromagnetic force, and an inclusion body sealed and wrapped outside the embedding body; a particle flow cell with a One side of the tank body is used as the adsorption side, and the other side is transparent as the observation side; the baffle member is matched with the particle flow tank, and together with the particle flow tank, it forms a multiple particle unit. The space for arrangement and stacking; and the electromagnetic chuck, which is arranged on the adsorption side of the particle flow cell, generates electromagnetic force to adsorb the particle unit on the adsorption side of the particle flow cell to form a stable particle column, and turns off the electromagnetic force to make the particle column collapse freely.

Description

Technical field [0001] The present invention belongs to the dynamics of particulate material dynamics, and in particular, the present invention relates to particle dynamics based on electromagnetically controlled particle dynamics. Background technique [0002] The flow of particulate materials is a very common phenomenon, which appears in various forms in various forms, such as natural factors such as mountain landslides, weathering rock debris, or granary grain flow, rock dam The phenomenon caused by human production life, etc., which belongs to the flow of particulate materials. Compared to ordinary liquids and solids mainly involve microscopic molecular electron movement and macro motion two spatial levels, the particulate material also has a fine structural hierarchy of particle size, and the link and macroscopic linkage and performance form are not Clearly, its movement and mechanical properties are also very complex. At the same time, the flow of particulate stack is a sol...

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Problems solved by technology

[0012] 3. Although the baffles can be used to restrain and release the particle column, most of the experimental devices adopt different lifting methods, and basically use the rapid lifting baffle to realize the collapse of the particle column, but the problem of the rapid lifting baffle is that There is no guarantee that the initial speed and the average speed are consistent each time, so it will affect the results of the test

[0013] 4. Most of the test devices do not consider or cannot allow the particles to self-adjust to eliminate some unstable contacts or gaps between the particles after the particle column is piled up.

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