FINITE ELEMENT ANALYSIS OF THE CONTACT BETWEEN TOOL AND WORKPIECE AT CERAMIC MATERIALS INTERNAL GRINDING

 

Daniel POPESCU, Dumitru BOLCU

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Abstract: Grinding is a processing procedure with small or micro chips. In order to develop in proper conditions, it is necessary a strong correlation between the mechanical characteristics (strength, bending resistance, etc.) of the ceramic product, tool and specific grinding forces. With the FEM analysis the nodal displacements decrease together with the decrease of the transversal contraction coefficient for the same load, while the increase of the elasticity modulus determines also a decrease of the nodal displacements. There are presented the variations of the nodal displacements as function of the longitudinal elasticity modulus E and of the transversal contraction coefficient n for different types of ceramic materials. The relative deformations for the same load increase with the decrease of the transversal contraction coefficient, while the increase of the elasticity module causes the decrease of the relative deformations.

 

Key words: finite element analysis, internal grinding, ceramic materials.