| نویسندگان | محمد لطفی-سعید امینی |
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| نشریه | P I MECH ENG E-J PRO |
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| تاریخ انتشار | 2017-7-01 |
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| نوع نشریه | الکترونیکی |
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| نمایه نشریه | ISI |
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چکیده مقاله
Utilization of ultrasonic vibrations in turning operation is an advanced method to improve processing of materials. The
aim of the present study was to develop a finite element model in order to investigate the effect of ultrasonic vibrations
on machinability factors in turning of Inconel 718. Conventional turning in addition to linear and elliptical ultrasonic-assisted turning were simulated and the effect of these processes on cutting forces, shear angle , chip thickness, sticky
zone , and temperature distributed on tool rake face was analyzed. Besides, the experimental tests were conducted and
the cutting forces have been measured to validate the simulation outputs. As a result, analysis of chip formation shows
that the values higher than 45 for shear angle is achieved when elliptical vibration is added to the cutting process.
Fur thermore , increase of shear angle coupled with decrease of temperature on tool rake face causes the sticky zone in
tool–chip contact length to be reduced compared to the conventional turning. Moreover, the influence of cutting speed
on tool–chip engagement time in ultrasonic-assisted turning is simulated.
