Prediction of Forming Limit Diagrams under combined Bending-Stretching loadings
Communication avec acte
Abstract
A number of parts and components involved in the automotive industry are made of thin bent sheets. Unfortunately, the classical predictions based on traditional Forming Limit Diagrams are not relevant when the strain distribution is heterogonous over the thickness, as is the case for bent sheet metals. The aim of the present contribution is to propose an extension of the well-known Marciniak‒Kuczynski approach to account for the effect of bending on formability prediction. The new developed tool allows predicting the limit strains for the whole range of strain paths. The mechanical behavior of the studied sheets follows the rigid–plastic flow theory. Through numerical results, it is shown that bending tends to decrease the formability limit of the sheet metal.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Article dans une revue avec comité de lectureA number of parts and components involved in the automotive industry are made of thin bent sheets, which are subjected to out-of-plane compressive stresses in addition to traditional in-plane stresses. Unfortunately, the ...
-
An Anisotropic Model with Linear Perturbation Technique to Predict HCP Sheet Metal Ductility Limit Chapitre d'ouvrage scientifiqueJEDIDI, Mohamed Yassine; BEN BETTAIEB, Mohamed; KHABOU, Mohamed Taoufik; BOUGUECHA, Anas; HADDAR, Mohamed; ABED-MERAIM, Farid (Springer International Publishing, 2022)In this paper, hexagonal closed packed (HCP) sheet metal ductility for a viscoplastic material is analyzed by using a linear perturbation technique. It can be used for the analysis of local-ized necking. This technique is ...
-
Communication avec acteJEDIDI, Mohamed Yassine; BEN BETTAIEB, Mohamed; BOUGUECHA, Anas; KHABOU, Mohamed Taoufik; HADDAR, Mohamed; ABED-MERAIM, Farid (Springer, 2018)In many engineering applications (automotive, computer and mobile device industries, etc.), magnesium alloys have been widely used owing to their interesting physical and mechanical parameters. However, magnesium alloys ...
-
An anisotropic model with linear perturbation technique to predict HCP sheet metal ductility limit Communication avec acteJEDIDI, Mohamed Yassine; BEN BETTAIEB, Mohamed; KHABOU, Mohamed Taoufik; BOUGUECHA, Anas; HADDAR, Mohamed; ABED-MERAIM, Farid (2021)In this paper, hexagonal closed packed (HCP) sheet metal ductility for a viscoplastic material is analyzed by using a linear perturbation technique. It can be used for the analysis of localized necking. This technique is ...
-
Communication avec acteJEDIDI, Mohamed Yassine; BEN BETTAIEB, Mohamed; KHABOU, Mohamed Taoufik; HADDAR, Mohamed; ABED-MERAIM, Farid (Springer, 2018)Due to their lightness, low stiffness and high strength, Hexagonal Closed Packed (HCP) materials are widely used in aeronautic and aerospace industries. In this paper, the ductility limit of HCP sheet materials at room ...