A sheet metal deformation process based upon bending combined with drawing has been developed with FEM numerical simulation assisted with simple experimental device. Careful experimental measurements combined with 3D numerical simulation identified the more relevant parameters and pointed out to several applications, among them controlled work hardening and plastic anisotropy measurement. Combining a nearly cyclic bending deformation path with a steady-state drawing promotes very high levels of effective strain and stress, even without apparent macrostrains. The numerical simulation of bend/drawing forecasts that deformation ratio ε2/ε3 on the strip is related to the Lankford anisotropy plastic coefficient measured by the uniaxial tensile test. Experimental measurements confirm this trend, pointing out to a new method to estimate Lankford coefficients.
|Number of pages||4|
|Journal||Journal of Materials Processing Technology|
|State||Published - Aug 22 2001|
Bibliographical noteFunding Information:
The authors would like to acknowledge CNPq/UFF for two PIBIC grants, M. da Silva Schiavo and J.A. de Farias Jr., CSN for the Research contract with UFF, to SMI from São Paulo for lending the LS-DYNA-3D code, CAPES for the M.A. de Almeida pos graduate grant, RECOPE project 77.97.0657.00, FAPERJ for making possible the presentation of this paper and the help of L.C. Vieira in the Laboratory.
- Anisotropy measurement
- Metal forming
- Numerical simulation
- Work hardening
ASJC Scopus subject areas
- Ceramics and Composites
- Computer Science Applications
- Metals and Alloys
- Industrial and Manufacturing Engineering