Wyznaczanie geometrii ziarna ściernego w modelu numerycznym na podstawie jego obrazów

Celem pracy jest przedstawienie metod generowania kształtu modelu numerycznego ziarna ściernego w oparciu o analizę obrazów ziarna rzeczywistego. Przedstawiono metodykę generowania kształtu ziarn ściernych, dla trzech różnych sposobów analizy obrazów ziarn rzeczywistych, z wykorzystaniem programu Matlab 7.0. Uzyskane geometrie zastosowano w symulacjach numerycznych procesu szlifowania pojedynczym ziarnem ściernym w programie Ansys.

The aim of this work is to present the methods for abrasive grain numerical model geometry generation based on analysis of real grain pictures. There is presented the methodology of abrasive grain shape generation for three different image analysis methods. The flowchart of the abrasive grain model generation algorithm for method No. 2 is shown in Fig. 4. Fig. 5 presents the flowchart for method No. 3. The retrieved geometries (Fig. 7) were used in numerical simulations of the single abrasive grain machining process. A significant difference in the approach proposed by the authors is a possibility of reproduction efficiency of the real abrasive grain geometry. The proposed new method for abrasive grain geometry generation is based on analysis of real grain images and creation of its numerical representation. This ensures irregular geometries of abrasive grains. The possibility of implementation of irregular numerical grain models in the ANSYS program will allow modelling and numerical simulation of the machining process at higher accuracy of numerical results (a numerical model will have reduced simplifications in relation to the real machining process). It is expected that three dimensional modelling and numerical simulation results will affect the further progress of science associated with efficiency increase of modeling machining operations processes. The numerical results will be subjected to experimental verification and may provide a basis for further modelling studies in this field.