INVESTIGATION OF HYDRO-PIERCING METHOD FOR STAINLESS STEELS BY FINITE ELEMENT METHOD

Abstract

In this study, numerical evaluation of the adaptability of the cutting operation to the hydroforming process, which has been widely used in many areas especially in recent years, has been made. In the numerical studies, the cut surfaces of the material were evaluated and the burr formation state was investigated for the different movement of the punch. Within the scope of the modeling study, it was tried to determine whether the cutting condition in the target process parameters was realized by using the Johnson-Cook (J-C) hardening and damage model. As a result, 304 stainless steel can be cut by this process in target process parameters.

Keywords

• Hydro-piercing,Johnson-Cook damage criteria,304 stainless steel

PASLANMAZ ÇELİKLERDE HİDRO-KESME YÖNTEMİNİN SONLU ELEMANLAR YÖNTEMİ İLE İNCELENMESİ

Öz

Yapılan bu çalışmada kesme operasyonunun özellikle son yıllarda birçok alanda yaygın olarak kullanılmaya başlanan hidro şekillendirme prosesine uyarlanabilirliğinin nümerik olarak değerlendirilmesi yapılmıştır. Nümerik çalışmalar kapsamında malzemenin kesilme yüzeyleri değerlendirilmiş ve çapak oluşum durumu zımbanın farklı hareketi için incelenmiştir. Modelleme çalışması kapsamında Johnson-Cook (J-C) pekleşme ve hasar modeli kullanılarak, hedeflenen proses parametrelerinde kesme durumunun gerçekleşip gerçekleşmediği belirlenmeye çalışılmıştır. Sonuç olarak hedef proses parametrelerinde 304 paslanmaz çeliğin bu proses ile kesilebilirliği gösterilmiştir.

Anahtar Kelimeler

• Hidro-kesme,Johnson-Cook hasar kriteri,304 paslanmaz çeliği

Kaynakça

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