A Finite Element Solution for Forming Processes

• Type: Article in International Conference Proceedings Book
• Date: 1996

Authors

José César de Sá (Author) FEUP; Luísa Costa Sousa (Author) FEUP; Maria Luísa Romariz Madureira (Author) FEUP; Renato Natal Jorge (Author) FEUP; J. Ribeiro (Author) Other

Conference proceedings International

Title: Proceedings of NUPHYMAT`96

Pages: 187-192

NUPHYMAT`96 - Workshop on Numerical and Physical Study of Material Forming Processes.

SOPHIA-ANTIPOLIS, FRANÇA, 05 - JUNHO - 1996

Other information

Abstract (EN): The presentes work is result of a project with the objective of producing a predictive software tool for hot and cold bulk forming processes, Several processes like forging, rolling or radial extrusion were addressed and the code assesment with experimental results. The constutive model is based on a viscoplastic formulation for cold and hot processes. Friction effects are included, both in the mechanical and thermal models. The finite element solution is based on a mixed method in order to deal with incompressibility and suitable for an efficient iterative solution procedure. The mixed field solution provides the basis for the definition of an error indicator on wich is based an adaptive mesh refinement technique. this technique includes a local superconvergent stress recovery process and an efficient algorithm for remeshing and transfering the field variables to the new mesh.

Language: Portuguese

Type (Professor's evaluation): Scientific

No. of pages: 6