Ti6Al4V Alaşımının Ortogonal Tornalanmasında İlerleme Hızının Kesme Kuvveti ve Talaş Morfolojisi Üzerindeki Etkilerinin Sonlu Elemanlar Analizi

Öz

Bu araştırmada, Ti6Al4V alaşımının ortogonal tornalama işleminde ilerleme hızının kesme kuvveti ve talaş morfolojisi üzerindeki etkilerinin sonlu elemanlar analizi gerçekleştirilmiştir. Enerjiye dayalı sünek hasar kriteri kullanılarak ortogonal tornalama sürecini modellemek için iki boyutlu (2B) sonlu elemanlar (FE) modeli oluşturulmuştur. Daha sonra, ilerleme hızının kesme kuvveti ve talaş morfolojisi üzerindeki etkileri tartışılmıştır. Tahmin edilen kesme kuvvetinin deney sonucuyla iyi uyum sağladığı ve karakteristik uzunlukla kontrol edilen hasar enerjisi kriterinin, kesme kuvvetlerini kabul edilebilir bir doğrulukla hesaplamak için kullanılabileceği bulunmuştur. Ti6Al4V alaşımının tornalanmasında testere dişli talaş şeklinde gözlemlenen talaş morfolojisi üzerinde ilerleme hızının büyük bir etkisi vardır. İlerleme hızının artmasıyla kesme kuvvetinin dalgalanma genliğinin keskin bir şekilde arttığı, ancak frekansın azaldığı gözlemlenebilir.

Anahtar Kelimeler

• Ortogonal Tornalama
• İlerleme Hızı
• Sonlu Elemanlar Simülasyonu
• Ti6Al4V Alaşımı

Etik Beyan

Bu makalenin yazarı, bu çalışmada kullanılan materyal ve yöntemlerin etik kurul izni ve/veya yasal-özel izin gerektirmediğini beyan eder.

Finite Element Analysis of the Influences of Feed Rate on Cutting Force and Chip Morphology in Orthogonal Turning of Ti6Al4V Alloy

Öz

In this research, a finite element (FE) analysis of the influences of feed rate on cutting force and chip morphology in orthogonal turning proceess of Ti6Al4V alloy is carried out. A two-dimensional (2D) FE model is established to model the orthogonal turning process using an energy-based ductile failure criterion. Then, the influence of feed rate on cutting force and chip morphology is discussed. It is found that the predicted cutting force agrees well with the experiment result, and the failure energy criterion adjusted by a characteristic length can be used to compute cutting forces with an acceptable accuracy. The feed rate has a great impact on the chip morphology observed in serrated chip shape in turning of Ti6Al4V alloy. It can be observed that the fluctuant amplitude of cutting force increases sharply with increasing the feed rate, but the frequency decreases.

Anahtar Kelimeler

• Orthogonal Turning
• Feed Rate
• Finite Element Simulation
• Ti6Al4V Alloy

Etik Beyan

The author of this article declares that the materials and methods used in this study do not require ethical committee permission and/or legal-special permission.

Kaynakça

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