Simulation Research on Cutting Process of Single Abrasive Grain

Cutting processes of single abrasive grain were simulated respectively by fluid-solid interaction method and Smoothed Particle Hydrodynamics method. Advantages and disadvantages of the two methods were compared. Smoothed Particle Hydrodynamics method is superior to fluid-solid interaction method in simulating the deformation behavior of workpiece material for the motion of SPH particles. According to the simulation results, it is concluded that workpiece material occurs plastic deformation, flows to the side and front owing to the extrusion of abrasive grain, and finally forms chip in front of abrasive grain.

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Simulation of boring by smoothed particle hydrodynamics method

Scientific journal of the Ternopil national technical university ◽

10.33108/visnyk_tntu2021.03.013 ◽

2021 ◽

Vol 103 (3) ◽

pp. 13-22

Author(s):

Maksym Shykhalieiev

Keyword(s):

Smoothed Particle Hydrodynamics ◽

Software Package ◽

Workpiece Material ◽

Explicit Statement ◽

Highly Nonlinear ◽

Particle Hydrodynamics ◽

Smoothed Particle ◽

Smoothed Particle Hydrodynamics Method ◽

Cutting Processes ◽

Empirical Coefficients

The possibility of applying the smoothed particle hydrodynamics method for modeling of cutting processes on the example of multi-blade boring of holes is considered in this paper. Highly nonlinear LS-Dyna solver with an explicit statement of the dynamic modeling problem is used as a software package for modeling. Johnson-Cook formulation with the corresponding empirical coefficients for each material is used as the model of the workpiece material. Absolutely solid tool is used to simplify the model. The kinematic scheme of the tool rotation is implemented using the keyword INITIAL_VELOCITY_GENERATION. The simulation results obtained in the software package are presented in the form of graphs.

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Simulation des orthogonalen Zerspanens mit LS-Dyna*/Simulation of the orthogonal cutting process with LS-Dyna - Comparison of Lagrangian-, Eulerian- and SPH cutting models

wt Werkstattstechnik online ◽

10.37544/1436-4980-2017-01-02-36 ◽

2017 ◽

Vol 107 (01-02) ◽

pp. 34-38

Author(s):

M. Storchak ◽

F. Diemer

Keyword(s):

Smoothed Particle Hydrodynamics ◽

Wide Spectrum ◽

Orthogonal Cutting ◽

Cutting Process ◽

Eulerian Model ◽

Advantages And Disadvantages ◽

Particle Hydrodynamics ◽

Smoothed Particle ◽

Cutting Processes ◽

Cutting Model

Immer häufiger kommen Simulationsergebnisse zur Optimierung von Zerspanprozessen zum Einsatz. Dabei wird ein sehr breites Spektrum verschiedener Techniken und Algorithmen verwendet. Für die entsprechende Auswahl muss der Anwendungsingenieur eine Überprüfung der Vor- und Nachteile der verschiedenen Algorithmen bei der Erstellung und Verwendung der numerischen Zerspanmodelle in Bezug auf den jeweils vorliegenden Zerpanprozess vornehmen. In diesem Artikel werden unterschiedliche Berechnungs- und Ansatzalgorithmen anhand von vier Zerspanmodellen – Lagrange‘sches Modell mit und ohne Remeshing, Euler’sches Modell und SPH (Smoothed Particle Hydrodynamics)-Modell – erarbeitet und miteinander sowie mit den experimentell gewonnenen Daten verglichen.   More and more results from simulations are being used to optimize cutting processes. To accomplish this, a very wide spectrum of different techniques and algorithms is applied. The engineer is required to find the advantages and disadvantages of the different algorithms used for development and employment in the numerical cutting model. This paper compares different calculation and approach algorithms on the basis of four different cutting models - Lagrange model with and without Remeshing, Eulerian model and SPH (Smoothed Particle Hydrodynamics)-model - as well as experimentally gained data.

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