Abstract In the automotive engineering community, the modified maximum force criterion proposed by Hora and co-workers is considered acceptable for theoretically estimating the forming limit curve (FLC) of sheet metals. Based on this criterion, a graphical method is proposed to simplify evaluation of the FLC. This paper investigates the proposed graphical method in a special case by using a power-hardening law and the Mises yield function, which leads to an explicit expression of the critical strains according the strain paths. The FLC of a DP590 sheet estimated using the proposed method is compared with that estimated using existing analytical methods. The proposed method provides the best prediction of the FLC of the tested material. For verification, the calculated FLC is then adopted into the finite-element method to predict the punch stroke at fracture of several notched specimens subjected to Nakazima tests. The good agreement between the predicted and experimentally determined values of the punch strokes verifies the ability and potential of the proposed method in industrial engineering.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Application of a Graphical Method on Estimating Forming Limit Curve of Automotive Sheet Metals


    Contributors:


    Publication date :

    2019-11-01


    Size :

    6 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Application of a Graphical Method on Estimating Forming Limit Curve of Automotive Sheet Metals

    Pham, Quoc Tuan / Kim, Jinjae / Luyen, The Thanh et al. | Online Contents | 2019


    Forming Limit Curve Variability of Aluminum Sheet

    Smith, P. | British Library Conference Proceedings | 1994


    Forming limit at sheet metal forming

    Tmej, J. / Mikes, V. / Buchar, Z. | Tema Archive | 1989


    Recent progress in the development of forming limit curves for automotive sheet steels

    Raghavan,K.S. / Kuren,R.C.van / Darlington,H. et al. | Automotive engineering | 1992


    Recent progress in the development of forming limit curves for automotive sheet steels

    Raghavan, K.S. / Kuren, R.C. van / Darlington, H. | Tema Archive | 1992