Finite Element Modeling Method of Centrifugally Rotary Processing

Nguyen, Van Tho; Soloviev, А. N.; Tamarkin,; Panfilov, Ivan

doi:10.4028/www.scientific.net/amm.889.140

Cited by 5 publications

(1 citation statement)

References 4 publications

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“…При финишной обработке поверхностей эластичными полимерно-абразивными инструментами, хонингованием, суперфинишированием, а также в среде или в потоке свободных абразивных частиц съем материала осуществляется при взаимодействии режущего микрорельефа инструмента с обрабатываемым материалом. Исследованию процесса обработки абразивным инструментом посвящен ряд работ [1][2][3][4][5][6][7][8][9][10][11].…”

Section: Introductionunclassified

Force of cutting by a single abrasive grain

Dimov

Podashev

2023

jour

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This paper investigates the cutting forces arising when using a single abrasive grain. Analytical studies were carried out using a model of a single abrasive grain in the form of a rod with a radiused apex acting on the workpiece material. The slip-line method (method of characteristics) was used to calculate the deformation intensity of a plastically edged workpiece material under the action of a single grain. Mathematical models were developed for the following factors: plastic deformation of the material, edging of the stagnated zone and its friction against the grain surface when moved upwards in the form of chippings, grain friction against the plastically deformed material, and the action of the dynamic component of plastic deformation. The significance of the dynamic component in the overall balance of forces related to plastic deformation was established by determining the ratio of dynamic stress on the break line and shear yield point. This dependence calculated for D16T and 30HGSA materials showed the feasibility of accounting for the dynamic component of the cutting force under the velocity of a single grain impacting the workpiece surface of above 50 m/s. Graphs depicting the relative grain force and the relative depth of grain penetration are given. The proposed calculation method for cutting forces using a single grain can be used to determine the total force of interaction between the single grain and the work-piece material. In order to adopt the defined processing method and the workpiece material, the number of grains in contact, the contact duration, and the cutting speed should be found. On this basis, the process performance and the quality of the workpiece surface can be calculated.

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Section: Introductionunclassified

Force of cutting by a single abrasive grain

Dimov

Podashev

2023

jour

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Modeling metal removal from workpiece surface during centrifugal rotation processing

Tho

Soloviev

Tamarkin

2021

J. Phys.: Conf. Ser.

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The modeling and analysis the removal of metal process in centrifugal rotational processing of workpiece in abrasive medium are considered in this article. The single contact interaction process between abrasive particle and the workpiece surface is researched through three-dimensional modeling taking into account dry coefficient of friction. The contact interaction problem is solved through Ansys software and Archard code programmed to analyze the data. The removal of metal from the workpiece surface is researched when changing the technological parameters: friction coefficient, machining time, speed. The dependences between metal removal from the workpiece surface and technological parameters are constructed, from which reasonable parameters can be selected when machining the workpiece, allowing to achieve high accuracy. Experimental results have been confirmed by simulation results. Through this research, essential and important data sheets will be provided for actual production and testing activities. Consequently, time and money are saved in achieving the desired surface quality.

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Material deformation and chip formation under single abrasive grain action

Dimov,

Podashev

2024

jour

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The purpose of the work is to determine the volume of material destroyed by a single grain (microasperity), which produces elastic and plastic deformation of the material when an abrasive tool interacts with the treated surface. To calculate the intensity of deformation of the plastically displaced material of the workpiece under the action of a single grain, the slip-line technique (method of characteristics) was used. To determine the volume of material destroyed by a single grain as a result of polydeformation when moving in the tangential direction, the following is determined: area of the deformed material; intensity of the shear deformation; speed of the shear deformation rate; number of plastic deformation cycles necessary for the destruction of the material in various zones of the sliding line field. The solution to these problems is found using the radii of curvature of the sliding lines in the physical planes and in the planes of the velocity hodographs for the meridional and normal to the axis planes of the grain section. The determination of the elastic deformation of the material is taken into account when calculating the roughness of the treated surface. Chip formation under the action of a single grain is considered taking into account the determination of the cross-sectional area of chips. This formed the basis for a determination of material removal during abrasive processing. The theoretical provisions for the determination of the above indicators are confirmed by experimental data. Thus, the studies carried out by the slip-line method formed a basis for determining the volume of plastically deformed material, the magnitude and rate of deformation under the action of a single grain, as well as the volume of the removed material as a result of repeated plastic deformation and in the form of chips. The performed investigation forms an integral part of studies into the process performance and roughness of the machined surface when finishing workpieces with elastic polymer-abrasive tools and free abrasive particles.

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Finite Element Modeling Method of Centrifugally Rotary Processing

Cited by 5 publications

References 4 publications

Force of cutting by a single abrasive grain

Force of cutting by a single abrasive grain

Modeling metal removal from workpiece surface during centrifugal rotation processing

Material deformation and chip formation under single abrasive grain action

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