Article Title

Kesici Takım Geometrisinin Ti-6Al-4V’nin İşlenmesi Sırasında Oluşan Tırtıklı Talaş Üzerindeki Etkisinin Sonlu Elemanlar Yöntemi ile Araştırılması


Modeling of serrated chip formation during machining of Ti-6Al-4V titanium alloy is quite challenging and is of vital importance, since it affects tool life, machined part accuracy and surface quality. Several material constitutive models are developed to address this issue, including models based on thermal softening, strain softening and damage, while the effect of cutting tool geometry on serrated chip formation requires further investigations. In this study, a modified Johnson-Cook constitutive material model which takes into account strain softening effect in the form of tangent hyperbolic function has been considered. Cutting tools having different geometries (rake angle, clearance angle and edge radius) are considered and modeled and their effect on serrated chip formation is analyzed. Cutting force, chip morphology and degree of serration are used as machining process outputs.