KESİCİ TAKIM GERİLMELERİNİN SONLU ELEMANLAR METODU KULLANILARAK İNCELENMESİ

Öz

Bu çalışmada, Al 2007 alüminyum alaşımı malzemenin ortogonal (dik) kesme işleminde kullanılan 0.1, 0.2 ve 0.4 mm paso derinliğinin kesici takım gerilmeleri (normal, kayma ve von Mises) üzerindeki etkileri sonlu elemanlar metoduna dayalı ANSYS paket programı kullanılarak analiz edilmiş ve derinliğe bağlı olarak kesme kenarındaki gerilmelerin değişimi incelenmiştir. Esas kesme kuvveti ve pasif kuvvetin kesici takım üzerindeki etkisi, takım-talaş temas uzunluğu dikkate alınarak oluşturulan sonlu eleman modellerinde talaş yüzeyinde ve yardımcı yüzeyde normal ve teğetsel kuvvet bileşeni biçiminde uygulanmıştır. Analiz sonuçları, y-ekseni doğrultusundaki normal ve xy-düzlemindeki kayma gerilmelerinin kesici takımın ucundan takım-talaş temas uzunluğunun sonuna doğru azalmakta olduğunu ve dağılımlarının Lee ve Zorev’in normal gerilme dağılıma paralel bir biçimde gerçekleştiğini göstermektedir.

Anahtar Kelimeler

• Paso derinliği, kesme kuvvetleri, kesici takım gerilmeleri, ANSYS.

Kaynakça

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