考虑磨粒形状、相互作用和破碎等因素的SPH-FEM耦合方法对磨料水射流冲击力特性的数值研究

IF 4.6 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology Pub Date : 2025-06-20 DOI:10.1016/j.powtec.2025.121287

Huan Li, Jingbin Li, Zhongwei Huang, Chenrui Guo, Hao Wang, Wenbin Li

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引用次数: 0

摘要

磨料水射流（AWJ）是一种现代材料加工方法。基于光滑颗粒流体力学（SPH）和有限元耦合方法，建立了考虑磨料颗粒形状、相互作用和破碎的磨料-材料相互作用模型。首先利用射流冲击力理论模型对数值模型的精度进行了验证，得到的射流冲击力数值模型与理论模型的误差为6.87%。在此基础上，研究了磨料水与材料相互作用过程中磨料水的平均撞击力、撞击力波动程度和水撞击力比。最后分析了磨料颗粒半径、磨料质量浓度、冲击速度、冲击角度和目标形状对磨料水射流冲击力特性的影响。研究结果加深了对水射流与材料相互作用过程的认识，有利于提高水射流的能效。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Numerical investigation of abrasive water jet impact force characteristics by using the coupled SPH-FEM method: Considering the shape, the interaction and the fragmentation of abrasive particles

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Numerical investigation of abrasive water jet impact force characteristics by using the coupled SPH-FEM method: Considering the shape, the interaction and the fragmentation of abrasive particles

The abrasive water jet (AWJ) is a modern material machining method. In this study, an AWJ-material interaction model that considers the shape, interaction and fragmentation of abrasive particles was developed based on the coupled smoothed particle hydrodynamics (SPH) and finite element method (FEM). Firstly, the theoretical model of jet impact force is utilized to verify the precision of the numerical model, and error of the jet impact force between the numerical and theoretical model is 6.87 %. Then, the mean AWJ impact force, fluctuation degree of AWJ impact force and water impact force ratio during the AWJ material interaction process are investigated. Finally, the effects of the abrasive particle radius, abrasive mass concentration, impact velocity, impact angle and target shape on the AWJ impact force characteristics are revealed. The results deepen the understanding of the AWJ-material interaction process and are beneficial for improving the energy efficiency of the AWJ operation.

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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.