Research on adhesion properties of tidal flat soil on metal surface and discrete element simulation

IF 4.5 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology Pub Date : 2024-11-05 DOI:10.1016/j.powtec.2024.120410

Xifeng Liang , Ze Hu , Yongwei Wang

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引用次数: 0

Abstract

The adhesion property of soil on the metal surface was tested by the orthogonal experiment with 4 factors and 3 levels based on piston pull out method. A regression model of adhesion stress and the factors including moisture content(

X_{1}

), pressing time(

X_{2}

), settling time(

X_{3}

) and separation velocity (

X_{4}

) was established. The experiment results show that the influence of each factor on adhesion stress is ranked as

X_{1} \approx X_{2} \approx X_{3} > X_{4} > X_{3} X_{4}

, and the adhesion stress shows an ‘S’ curve with the increase of separation velocity. The DEM parameters of the soil were calibrated based on the test results, and the contact and disturbance state of soil particles during the test were studied by discrete element method (DEM) using JKR model. The simulation tests show that the maximum adhesion stress occurs when the particles are about to separate from the probe surface, and the soil disturbance state is hierarchical.

Abstract Image

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潮汐平地土壤在金属表面的附着特性研究与离散元模拟

基于活塞拉拔法，通过 4 个因素和 3 个水平的正交实验测试了土壤在金属表面的附着特性。建立了附着应力与含水量（X1）、加压时间（X2）、沉降时间（X3）和分离速度（X4）等因素的回归模型。实验结果表明，各因素对附着应力的影响程度依次为 X1≈X2≈X3>X4>X3X4，且附着应力随分离速度的增加呈 "S "型曲线。根据试验结果标定了土壤的 DEM 参数，并利用 JKR 模型通过离散元法（DEM）研究了试验过程中土壤颗粒的接触和扰动状态。模拟试验表明，最大粘附应力出现在颗粒即将脱离探头表面时，土壤扰动状态是分层的。

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来源期刊

Powder Technology 工程技术-工程：化工

CiteScore

9.90

自引率

15.40%

发文量

1047

审稿时长

46 days

期刊介绍： Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests: Formation and synthesis of particles by precipitation and other methods. Modification of particles by agglomeration, coating, comminution and attrition. Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces). Packing, failure, flow and permeability of assemblies of particles. Particle-particle interactions and suspension rheology. Handling and processing operations such as slurry flow, fluidization, pneumatic conveying. Interactions between particles and their environment, including delivery of particulate products to the body. Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters. For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.