A comparative study of forming limit diagram prediction of tailor welded blanks

• Tipo: Artigo em Revista Científica Internacional
• Data: 2015

Autores

Safdarian, R (Autor) Outra; Renato Natal Jorge (Autor) FEUP; Santos, AD (Autor) Outra; Naeini, HM (Autor) Outra; Parente, MPL (Autor) FEUP

Revista

Título: International Journal of Material Forming

Vol. 8

Páginas: 293-304

ISSN: 1960-6206

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 7 Citações

Scopus - 19 Citações

Outras Informações

ID Authenticus: P-00A-CDV

DOI: 10.1007/s12289-014-1168-9

Abstract (EN): The Forming Limit Diagram (FLD) is a useful method for characterizing the formability of sheet metals. In this paper, different numerical models were used to investigate the FLD of Tailor Welded Blanks (TWB). TWB were CO2 laser-welded of interstitial-free (IF) steel sheets with difference in thickness. Numerical approaches of Muschenborn-Sonne Forming Limit Diagram (MSFLD), Forming Limit Diagram criterion (FLDcrt) and Ductile Fracture Criterion (DFCcrt), as well as new numerical method of Second Derivative of Thinning (SDT) were used for FLD prediction. The results of numerical models were compared with the experimental FLD, Limit Dome Height (LDH) and also load-displacement of samples. The emphasis of this investigation is to determine the performance of these different approaches in predicting the FLD. Results show that previous approaches are successful for the left side of FLD (drawing), but not so successful for the right side of the FLD (stretching). Influence of anisotropy on the forming behavior of TWB is investigated in this study and its results are compared with isotropic models and experimental data.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 12