Application of response surface method for FEM bending analysis. (24th June 2005)

• Record Type: Journal Article
• Authors: Hambli, Ridha; Mkaddem, Ali; Potiron, Alain
• Is Part Of: International journal of vehicle design. Volume 39:Number 1/2(2005)
• Page Start: 1
• Page End: 13
• Publication Date: 2005-06-24
• Subjects: bending force -- springback -- FEM -- response surface methodology -- finite element method -- Mises stress -- damage evolution -- sheet metal bending; Motor vehicles -- Design and construction -- Periodicals; 629.231
• Languages: English
• ISSNs: 0143-3369

Abstract

The bending of metal parts is subjected to a variety of process parameters. In this paper, a numerical investigation into the bending process was carried out. The aim was to study the effects of the interaction between the clearance and the die corner radius on the evolution of the bending force, the maximum damage within the part, the springback and the Mises stress. Designed experiments are an efficient and cost-effective way to model and analyse the relationships that describe process variations. The numerical simulation of the damage evolution has been modelled by means of continuum damage approach. The Lemaitre damage model, taking into account the influence of triaxiality, has been implemented into ABAQUS/Standard code, in order to predict the risk to external fibres during the process and the changes in material characteristics after bending. The results of the proposed investigation show the strong dependence between the inputs and the responses.