Fracture onset in sheet metal forming : a comparison between a finite element damage model and a post-processing plastic instability code

• Type: Article in International Conference Proceedings Book
• Date: 2007

Authors

Pedro Teixeira (Author) FEUP; Abel D. Santos (Author) FEUP; José Manuel César de Sá (Author) FEUP; A. Barata da Rocha (Author) FEUP

Conference proceedings International

Title: IDDRG 2007 - International Deep Drawing Research Group Conference

Pages: 205-212

Gyor, Hungary, 21 a 23 de Maio de 2007

Scientific classification

FOS: Engineering and technology > Mechanical engineering

CORDIS: Technological sciences > Engineering > Mechanical engineering

Other information

Abstract (EN): Necking prediction in sheet metal forming is an important demand from industry, since such assessment defines the success of a stamping process. This paper presents two numerical approaches for failure prediction in sheet metal forming operations: the implementation of the Lemaitre¿s ductile damage model in the Abaqus/Explicit code in accordance with the theory of continuum damage mechanics and the traditional use of FLDs, usually employed as an analysis of the finite element solution in which the necking phenomenon is carried out in the framework of Marciniak-Kuczinsky (M-K) analysis coupled with the conventional theory of plasticity. The previous strategies and corresponding results are compared with two experimental failure cases, in order to test and validate each of these strategies

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8