Reconstruction of geometrical structure of claw of Marmota and research of soil-claw interaction

IF 4.5 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology Pub Date : 2024-10-04 DOI:10.1016/j.powtec.2024.120345

引用次数: 0

Abstract

The Himalayan marmot can excavate soil efficiently, and the geometric structure of its claw and its movement during excavation can provide a reference for the design of soil tillage components. In this paper, the geometric model of the claw is reconstructed using reverse engineering methods, and its contour curves are fitted and curvature analyzed. It is found that the marmot's claw can break the soil with high efficiency and excellent sliding-cutting action. The interaction relationship between the soil and claw was simulated using the discrete element method, and the effects of working depth and rake angle on the horizontal force, soil disturbance area, and soil particle velocity were analyzed. The results showed that the horizontal force increased with the increase of working depth, and first increased and then decreased with the increase of rake angle. The optimal working effect was achieved when the rake angle was 75°.

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马莫塔爪子几何结构的重建和土壤与爪子相互作用的研究

喜马拉雅旱獭可以高效地挖掘土壤，其爪子的几何结构及其在挖掘过程中的运动可以为土壤耕作部件的设计提供参考。本文采用逆向工程方法重建了土拨鼠爪的几何模型，并对其轮廓曲线进行了拟合和曲率分析。研究发现，旱獭爪可以高效破土，具有良好的滑动切割作用。采用离散元法模拟了土壤与爪子之间的相互作用关系，分析了工作深度和耙角对水平力、土壤扰动面积和土壤颗粒速度的影响。结果表明，水平力随工作深度的增加而增大，随耙角的增加先增大后减小。当耙角为 75° 时，达到了最佳工作效果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.