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PhD Position: Multi-scale Modeling of Friction in Aluminum Sheet Forming

Job description

During the last several years, aluminum use in car industry marks the highest growth from all other aluminum applications, in any segment of use. The electric vehicle revolution makes an additional prospect for even higher aluminum demand to reduce vehicle weight and meet consumer demands for higher driving range at a given battery size and weight. This trend obliges the car industry to expand and improve knowledge in stamping of aluminum sheets. The design of stamping processes is generally supported by finite element (FE) analyses. For a realistic prediction of the FE simulations, accurate models for material (plastic deformation) behavior as well as friction are vital. The material constitutive modelling of aluminum has advanced over the last decades to a degree that the main error in simulation now stems from description of friction.

Friction is one of the key parameters in sheet metal forming which can directly influence the formability of the product. In a typical forming process, the coefficient of friction is a transient parameter and varies from location to location throughout the part due to evolution of the contact conditions at the tool-sheet metal interface. The contact condition in turn is a function of the topography of the contacting surfaces, contact loads, material and lubricant behavior and temperature. Most literature on friction in forming is focused on steel sheet, however, little is known on friction in forming of aluminum sheet.

During the past decade, University of Twente has developed multi-scale friction models for steel sheet forming applications which are currently used extensively in industry. The main goal of the current project is to investigate tribological behavior of aluminum sheet at micro, meso and macro-scales and finally to develop and validate friction models of aluminum sheet surface in a deep drawing process, leading to an advanced friction model that can be used for industrial-scale process simulations.

Job Description

For this project, we are looking for a PhD candidate with relevant expertise. The candidate will plan and execute his/her research towards the project goal, build numerical/analytical friction models for aluminum sheet forming and perform experiments in our well-equipped mechanical and tribology testing labs.

The candidate will report his/her research during bi-weekly meetings of our research group and quarterly meetings with the project partners. The candidate is encouraged to present his/her results at international scientific conferences and publish them in academic literature.

The PhD research will be performed in collaboration between the chair of Nonlinear Solid Mechanics and the chair of Surface Engineering & Maintenance at University of Twente and in close interaction with industrial partners.

Your profile

  • MSc. degree in Mechanical Engineering or a related field with excellent results and special interest in mathematical modelling, experimental mechanics and sheet metal forming.
  • Prior knowledge of nonlinear solid mechanics, tribology and computational methods.
  • Curious and highly motivated to do interdisciplinary scientific research with a clear industrial application.
  • Working independently and taking ownership for your own research.
  • Strong written and verbal communication skills. Proficiency in English is required, both spoken and written. You need to provide IELTS test results (minimum score 6.5) or TOEFL-iBT (minimum score 90). The latter is not necessary for native speakers of English or whose MSc program was in English.

Our offer

The UT provides a dynamic and international environment, combining the benefits of academic research with a topic of high industrial relevance, excellent working conditions, an exciting scientific environment, and a green and lively campus. We offer:

  • A full-time 4-year PhD position;
  • We provide excellent mentorship and a stimulating international research environment with excellent facilities;
  • You are offered a professional and personal development program within Graduate School Twente;
  • A starting salary of € 2.325 gross per month in the first year and a salary of € 3.061 in the fourth year gross per month;
  • A holiday allowance of 8% of the gross annual salary and a year-end bonus of 8.3%;
  • A solid pension scheme;
  • Minimum of 29 holidays per year in case of fulltime employment;

Information and application

Please submit your application before July 31, 2021using the Apply now button, and include:

  • Curriculum vitae
  • Letter of motivation
  • Grades of the BSc and MSc courses
  • IELTS or TOEFL score (if necessary)
  • Contact information of 2 references

Additional information about this position can be acquired from Dr. Javad Hazrati, email:j.hazratimarangalou@utwente.nland Prof. Matthijn de Rooij, email:m.b.derooij@utwente.nl

About the department

The Chairs of Nonlinear Solid Mechanics & Surface Engineering and Maintenance, Faculty of Engineering Technology, University of Twente has an opening for a PhD candidate on characterization of tribological interactions in aluminum sheet forming.

About the organization

The Faculty of Engineering Technology (ET) engages in education and research Mechanical Engineering, Civil Engineering and Industrial Design Engineering with a view to enabling society and industry to innovate and create value using sound, efficient and sustainable technology. We are part of a ‘people-first' university of technology, taking our place as an internationally leading centre for smart production, processes and devices in five domains: Health Technology, Maintenance, Smart Regions, Smart Industry and Sustainable Resources. Our faculty is home to some 1,800 Bachelor's and Master's students, 400 employees and 150 PhD candidates and offers three degree programmes: Mechanical Engineering, Civil Engineering and Industrial Design Engineering. Our educational and research programme are closely connected with UT research institutes Mesa+ Institute, TechMed Centra and Digital Society Institute.

University of Twente (UT)

University of Twente (UT) has entered the new decade with an ambitious, new vision, mission and strategy. As ‘the ultimate people-first university of technology' we are rapidly expanding on our High Tech Human Touch philosophy and the unique role it affords us in society. Everything we do is aimed at maximum impact on people, society and connections through the sustainable utilisation of science and technology. We want to contribute to the development of a fair, digital and sustainable society through our open, inclusive and entrepreneurial attitude. This attitude permeates everything we do and is present in every one of UT's departments and faculties. Building on our rich legacy in merging technical and social sciences, we focus on five distinguishing research domains: Improving healthcare by personalised technologies; Creating intelligent manufacturing systems; Shaping our world with smart materials; Engineering our digital society; and Engineering for a resilient world.

As an employer, University of Twente offers jobs that matter. We equip you as a staff member to shape new opportunities both for yourself and for our society. With us, you will be part of a leading tech university that is changing our world for the better. We offer an open, inclusive and entrepreneurial climate, in which we encourage you to make healthy choices, for example, with our flexible, customisable conditions.

PhD Position: Multi-scale Modeling of Friction in Aluminum Sheet Forming
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