Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

Yazarlar: Serkan TOROS

Konular:Mühendislik, Makine

DOI:10.28948/ngumuh.342073

Anahtar Kelimeler:304L,Forming limit diagram,BBC family,Marciniak-Kuczynski model

Özet:    In recent years, numerous researchers have focused on the determination of the formability limits of the sheet materials experimentally and numerically. Due to some troubles encountered during the experimental studies, the modeling of the formability characteristics of the materials via simple experiments like tensile tests is the main issue for the most researchers. In the literature, most of the developed model results strongly depend on yield functions used and their parameters which reflect the materials’ anisotropic behaviors. In this study, the capability of BBC family yield functions (BBC2000, 2003, 2005 and 2008) are investigated to construct the forming limit diagram of 304L stainless steel by using the Marciniak-Kuczynski instability model. The models are evaluated for different anisotropy determination approaches and the predicted results have been compared with the experimental forming limit diagram.

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