Modeling of side trimming process

Description de l'offre

Country:

FRANCE

Region:

LORRAINE

Sector:

ArcelorMittal Europe - Flat Carbon

Unit:

ARCELOR RESEARCH

Site:

ArcelorMittal RESEARCH Maizieres

Field of activity:

Research and Development / Metallurgy Innovation

Title of internship:

Modeling of side trimming process

Subject of the internship:

The side trimming process is widely employed for flat steel product manufacturing in the plants of ArcelorMittal. The side trimming of steel coils ensures high quality coil edges and a desired strip width. However, the process might suffer from some failures, which lead to both rejected products and extra tools’ maintenance cost. The optimization of side trimming process could help to avoid such failures. Therefore, there is thus real need to develop numerical models that enable acquiring further understanding on detailed mechanical aspects of the process and in the same time performing parametric study for process optimization. Results of such simulations could be imported to the simulations of cold rolling process to see the impact of side trimming on the occurrence of defects, especially the saw-tooth one, during cold rolling. The main objective of this internship is to develop a finite element model for the side trimming process. The mission : The internship will focus on the development of Finite Element models for side trimming process aiming at both understanding local stress filed encountered by the tools and damage-fracture sequences occurring inside the cut steel strip. Detailed works are: 1. Literature review on existing models: Finite Element & semi-analytical ones. 2. Construction of a FE model of side trimming process accounting for deformation of tool (i.e., knives). 3. Improvement of the model by accounting for a damage model (or fracture criterion) to describe initiation and propagation of cracks inside the strip. 4. Comparisons between model results with experimental measurements. 5. Construction of a 3-D model by accounting for both tool deformation and final fracture of trimmed material. 6. Chaining: side-trimming cold rolling simulation to see the impact of the side-trimming on the occurrence of defects (e.g. saw-tooth) in cold rolling.

Profil recherché

Applicant Profile:

Mechanical engineer student. Autonomy and team-working. Very good knowledge in Finite Element Modeling. Solid background in material mechanics: elasto-plasticity, ductile damage and fracture. Knowledge about side trimming process will be a plus.

Education:

Mechanical engineering / computational mechanics

Level of education:

MASTER (Bac+4/5)

Language:

English: Advanced - French: Intermidiate

Duration of the internship:

6 months

Period of the internship:

March 2017

Managers of the internship:

Negar GILANI
Tel:
Email: ************@*******.**

Comments:

This internship will be carried out in the Downstream Process (DP) department of Process center at Maizières-lès-Metz, France. Inside the DP department, the student will work in an international environment involving around thirty five specialists, R&D engineers and technicians.

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