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

Year 2018, , 954 - 965, 20.07.2018

Habip Gökay Korkmaz , Serkan Toros Hüseyin Selçuk Halkacı

https://doi.org/10.28948/ngumuh.445429

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

Abstract

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.

Keywords

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

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