PhD opportunities

Numerical modeling of thin products forming under complex loads

Thesis proposal

Area of expertiseComputational mechanics and Materials
Doctoral SchoolSFA - Sciences Fondamentales et Appliques
SupervisorM. Daniel PINO MUOZ
Co-supervisorM. Pierre-Olivier BOUCHARD
Research unitCentre for material forming
Contact
http://www.cemef.mines-paristech.fr/sections/formations/doctorats/pour-postuler/these-cemef-4277
Starting dateOctober 1st 2018
KeywordsAnisotropy, Mesh adaption, C++ and Fortran programming , Finite elements method
AbstractOne of the reasons why numerical simulations are not able to predict these areas of damage is related to the complexity of loading paths imposed on the material. This complexity requires a very good representation of the plastic response of the material whose anisotropy must be taken into account precisely.

The main purpose of this thesis is to improve the capabilities of Forge to model thin products. The first challenge to rise will be related to the development of constitutive laws adapted to reproduce the anisotropy of materials under complex non-proportional loading paths.

These anisotropic behavior laws will be implemented in an external library that will be coupled to a mechanical solver in Forge. This type of approach improves the flexibility in order to develop new constitutive laws and it also allows to separate the finite element data structure from the rheological behavior of the material. The candidate will have to be particularly interested in numerical development within a parallel computing framework in C ++ and Fortran.

This coupling requires the development of a suitable finite element formulation; the candidate will develop advanced skills related to finite element methods.

With the new constitutive laws of anisotropic behavior integrated in Forge, the project will move towards the improvement of the modeling techniques of thin products forming. To this end, the application of anisotropic mesh adaption techniques will be used to minimize the required computational time. The impact of anisotropic mesh adaption and contact techniques as part of the developed finite element formulation will also be studied.

The developments in this thesis will result in publications in recognized international journals as well as participation in international conferences in the field of computational mechanics. Collaborations with the University of Rosario (Argentina) and the Catholic University of Santiago (Chile) are planned.
ProfileDegree: MSc or MTech in Metallurgy, Materials Science, Non-linear Solid Mechanics, with excellent academic records. Skills: Computational mechanics, C++ and Fortran programming, non-linear mechanics of materials and metallurgy. The candidate should be particularly interested in programming and numerical modeling and knowledge of plastic material anisotropy would be appreciated. Ability to work with multi-disciplinary teams is also a must.
FundingFinancement d'un Etablissement d'enseignement suprieur
PartnershipContrat doctoral avec l'Ecole