| Autor: |
Gylienė, V., Eidukynas, V., Fehr, G., Kauno technologijos universitetas, Lietuvos mokslų akademija, Vilniaus Gedimino technikos universitetas |
| Jazyk: |
angličtina |
| Rok vydání: |
2015 |
| Předmět: |
|
| Popis: |
The paper presents the 3D square shoulder milling study of modeling, using Smooth Particle Hydrodynamics methodology that also illustrate specific challenges and solutions. The aim of the study – define the cutting forces and to compare them to analytical models. The milling is a discontinuous cutting process and by each turn the chips are formed depending on the milling tool width and number of teeth. Then the simplification of complex cutting tools to one-point tool is not so informa-tive and understandable for the numerical analysis. The main advantage of presented SPH methodo-logy – less artificial numerical criterions needed for nume-rical solution. Also, shorter calculation time comparing to FEM and „natural“ chip removal process due to Kernel function. SPH metodology alloowed to use real 3D milling cutter and to perform the calculation according to feed rate, cutting speed and tool rotation. In order to provide the numerical simulation the simplified numerical tests were performed, according to the density of smooth particles and artificial bulk viscosity parameter. The model demonstrated satisfactory coincidence of computed results against the theoretically obtained data. Calculated tangential cutting force is in satisfactory corre-lation with theoretical Hulle hypothesis. Tne numerical instabilies seen in graphics of results coud be eliminated with SPH metodology, by using higher cutting speed (de-formation rate). |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
