Discrete ductile fracture modelling for the metal blanking process |
| |
Authors: | D Brokken W A M Brekelmans F P T Baaijens |
| |
Affiliation: | (1) Section of Materials Technology, Faculty of Mechanical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600MB Eindhoven, The Netherlands, NL |
| |
Abstract: | Design and realisation of a metal blanking process in current industrial practice are mainly based on empirical knowledge.
For more sophisticated applications, involving high accuracy geometry specifications, or non-standard materials and product
shapes, this empirical approach often fails. This paper presents a set of interrelated numerical techniques resulting in a
finite element model of the metal blanking process, focusing on the prediction of the shape of the cut edge of a blanked product.
The large, localised deformations are handled by an Operator Split Arbitrary Lagrange Euler (OS-ALE) method supplemented by
full remeshing. Transport of the state variables between subsequent meshes for the OS-ALE and remeshing methods is accomplished
by the Discontinous Galerkin (DG) method and an interpolation procedure, respectively. Ductile fracture is incorporated using
a discrete cracking approach, which is shown to generate mesh independent results.
Received 4 February 2000 |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|