| About this Abstract |
| Meeting |
NUMISHEET 2021: The 12th International Conference on Numerical Simulation of 3D Sheet Metal Forming Processes
|
| Symposium
|
NUMISHEET 2021
|
| Presentation Title |
Identification and Validation of Brass Material Parameters Using Single Point Incremental Forming |
| Author(s) |
Ehssen Betaieb, Laurent Duchêne, Anne Marie Habraken |
| On-Site Speaker (Planned) |
Ehssen Betaieb |
| Abstract Scope |
The identification of a Brass material parameters using single point incremental forming is presented. The determination of accurate law parameters for metal sheets in the whole range of their plastic deformation field is a challenge in order to reach efficient forming simulations of manufacturing processes. The identification is performed using a home-made optimization code based on Levenberg-Marquardt algorithm (OPTIM). The finite element code (Lagamine) developed by the team since the eighties is used to carry out all the simulations.
To validate the previously identified material data, an identifiability method is developed. This method consists in measuring the capacity of a SPIF test to identify a material parameter by analyzing the sensitivity matrix. A consisting scalar (the identifiability index), concluded from the highest and the lowest eigenvalues of the Fisher’s matrix, gives a decision about the most appropriate SPIF test to identify the material data. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |