MASTER THESIS »MODELLING OF ADIABATIC SHEAR BAND INITIATION IN POLYCRYSTALS«
With over 300 employees, the Fraunhofer Institute for Mechanics of Materials IWM has been for 50 years one of the leading institutes in Europe for predicting the behaviour of materials using simulations and scientific experiments.
As part of a research group funded by the German Research Foundation (DFG), the influence of local microstructure and process parameters on the formation of adiabatic shear bands (ASB) during high-speed shear cutting (HGSS) is investigated using representative volume elements and the finite element method (CPFEM). A thermomechanical crystal plasticity material model (ABAQUS UMAT) is used to systematically understand the correlation between ASB formation, process parameters and local microstructure.
What you will do
• You will create two and a half dimensional representative volume elements (RVE) for 5000 series aluminum alloys
• You will enhance existing crystal plasticity UMAT to include thermal effects (Thermo-Mechanical Coupling)
• You would be optimizing the crystal plasticity material model parameters using experimental results
• You will conduct a Design of Experiments (DOE) analysis pertaining to ASB initiation.
• You will investigate the influence of loading conditions on ASB initiation in RVE
What you bring to the table
• You are enrolled and majoring in mechanical engineering, civil engineering, materials science, materials engineering, or a related discipline
• You are interested in materials characterization, their structure, and properties
• You have good knowledge of engineering mechanics, continuum mechanics, numerical methods, and material modelling
• You have previous knowledge in finite element simulation (e.g., ABAQUS) , material modelling
• You possess basic programming skills (e.g., Python, MATLAB, Mathematica)
• You are motivated to do scientific and at the same time industry-oriented research
• You are able to work independently and have critical thinking skills
• You have very good written and spoken German and English skills
What you can expect
• Structured orientation: we will maintain your start at the IWM and give the right support We value and promote the diversity of our employees' skills and therefore welcome all applications - regardless of age, gender, nationality, ethnic and social origin, religion, ideology, disability, sexual orientation and identity. Severely disabled persons are given preference in the event of equal suitability. With its focus on developing key technologies that are vital for the future and enabling the commercial utilization of this work by business and industry, Fraunhofer plays a central role in the innovation process. As a pioneer and catalyst for ground-breaking developments and scientific excellence, Fraunhofer helps shape society now and in the future. Interested? Apply online now. We look forward to getting to know you!
• Flexible working hours to ensure your work-life balance
• An open, collegial working environment and a good insight into the division of »Forming Processes«
Please apply online with your complete application documents (cover letter, CV, certificate of matriculation)
If you have any questions about this position, please do not hesitate to contact us:
Hemanth Janarthanam
Tel. +49(0) 761 5142-239
Fraunhofer Institute for Mechanics of Materials IWM
Requisition Number: IWM-2023-08
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Civil Engineer, Mechanical Engineer, Materials Engineer, Materials Science, Engineer, Engineering, Science