Task 4

All FEA software use constitutive models to reproduce the material behavior during the manufacturing process simulation. However, the quality of the results is directly dependent of the accuracy of the models in the reproduction of the deformation phenomena. Although some classical materials are well characterized, new and advanced materials need model calibration, which can be made through the parameter identification of the mention models. However, the FEA industry do not have accurate methodologies or software to calibrate the models. Therefore, there is a high demand for these methodologies and software. Additionally, both the FEA and metal industries do not have time and conditions to perform this methodology (that includes performing an experimental test, such as the one of task 2, and the use of the software of task 1&3). Therefore, these industries require a data base with a large number of models already calibrated for a large number of materials.

In this task, a response to the needs of the industry and FEA users is offered. The database will be located in a Website and it will be accessed by credited users from the industry and from Academy. This database should be enlarged by the contributions of all users, both with new constitutive models and identified parameters for all kind of materials, even after the conclusion of the project. Within the project, experimental test with high strength steels (like dual-phase steels, bake-hardening steels) will be performed and their behaviour will be characterized for several thermoviscoplastic models, including the extension of the Johnson-Cook model to thermoviscoplasticity and some internal variable models [7]. The ranges of temperature, strain and strain-rate depend of the material.

This task is an application of the previous three tasks, validating the impact of the project.