Authors
Abstract
This paper focuses on the development of Finite Element Method (FEM) in
modeling and simulation of coated cutting tools with multi-layer coats. A special Finite
Element code called (MSC.MARC mentat) is used in the numerical tests, the results are
then compared with experimental work. The paper studied the effect of number of coats
of cutting tools on the following field parameters; tool-chip contact length, chip
contraction coefficient and shear angle at similar machining conditions.The metal being
machined is (AISI 1045 steel) with orthogonal machining conditions. The three cutting
tools and models are coated with (TiN, TiN/TiC, TiN/Al2O3/TiC), while the fourth one
is uncoated.The results show good agreement between the experimental and numerical
tests. Some of the results are compared with other published papers. The comparison of
the predicted results shows good agreement with experimental tests with maximum
relative difference of (18%) for the chip contraction coefficient and contact length, and
(10 %) for the shear angle. The insert with double coats shows excellent result,
compared to others from point of view of chip contraction coefficient, contact length and
shear angle.
Keywords
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