Postdoc Mechatronic Metamaterial For Dynamic Performance

Job description

The high-tech mechatronic industry in the Netherlands is highly competitive and requires machines to run with ever-increasing speed and precision. State of the art machines have practically reached the asymptote of high support stiff- ness with a low amount of mass. Hence, higher precision and short cycles activate high frequency modes that need to be suppressed in order to obtain the desired performance and further increase the bandwidth. If significant damping is required, common passive dampers will unfortunately add significant mass, because the amount of damping is proportional to the added mass. Additionally, they also provide poor performance in the presence of multiple and/or varying modes. Potentially however, active damping can be the solution when reduced mass is of main concern and multiple modes are present.

Unfortunately, current active dampers exhibit limited suppression when applied to systems with unwanted vibration modes that are dynamically varying and cover a wide range of frequencies (broadband). Additionally, active damping is limited by the actuator force. Therefore, there is a huge challenge in the design of an adaptive mechanism that is capable of suppressing varying broadband vibration modes.

This project proposes to combine the two engineering disciplines of mechatronics and metamaterials to create a mechatronic metamaterial (MetaMech) structure for active vibration suppression. This MetaMech structure is characterised by integrating a high number of small smart actuators in a distributed manner into spatially architectured flexible structures (compliant mechanisms). The goal of MetaMech is to overcome (i) the mass limitation in passive damping and force limitation in active damping by an optimized distribution of active and passive material into a lattice metamaterial structure; and to overcome (ii) the fundamental limitations associated with known linear damping methods to enable broadband and/or varying mode suppression by developing adaptive nonlinear vibration suppression methods. If successful, MetaMech will be an adaptive damping material that enables not only the utilisation of compliant mechanisms for highly dynamic motion systems with larger deflections, but also increases the precision and speed of current motion systems that are limited by broadband vibration modes.

This is a collaborate project with industry partners ASML, VDL, PI and Demcon.

Requirements

  • Strong background in precision mechatronic systems design
  • Capable of performing experimental research
  • Capable of multiphysics modeling
  • Familiar with active damping (using piezoelectric)
  • Familiar with acoustic metamaterial/ Active metamaterial
  • Understanding mechanical design is a plus
  • Interest in contributing to the global success of the project, liaising with other team members responsible for different segments of the research;
  • Appreciation of team work, good social skills, and ability to function in international circles involving experts from academia and industry;
  • High proficiency in spoken/written English, and proven experience in preparing technical publications and project reports;
  • Interest in contributing to the co-supervision of MSc graduation projects.

Conditions of employment

Salary and benefits are in accordance with the Collective Labour Agreement for Dutch Universities (salary indication: € 3.703 – € 4.670 per month gross). The TU Delft offers a customisable compensation package, a discount on health insurance and sport memberships, and a monthly work costs contribution. Flexible work schedules can be arranged.

For international applicants we offer the Coming to Delft Service and Partner Career Advice to assist you with your relocation. An International Children’s Centre offers childcare and there is an international primary school.

This Postdoc position is a temporary assignment for two years.

Faculty Mechanical, Maritime and Materials Engineering

The Faculty of 3mE carries out pioneering research, leading to new fundamental insights and challenging applications in the field of mechanical engineering. From large-scale energy storage, medical instruments, control technology and robotics to smart materials, nanoscale structures and autonomous ships. The foundations and results of this research are reflected in outstanding, contemporary education, inspiring students and PhD candidates to become socially engaged and responsible engineers and scientists. The faculty of 3mE is a dynamic and innovative faculty with an international scope and high-tech lab facilities. Research and education focus on the design, manufacture, application and modification of products, materials, processes and mechanical devices, contributing to the development and growth of a sustainable society, as well as prosperity and welfare.

Click here to go to the website of the Faculty of Mechanical, Maritime and Materials Engineering. Do you want to experience working at our faculty? These videos will introduce you to some of our researchers and their work.

Additional information

For more information about this vacancy, please contact Hassan HosseinNia, s.h.hosseinniakani@tudelft.nl.

Application procedure

Are you interested in this vacancy? Please apply via the application button and upload:

  1. a detailed curriculum vitae that explicitly states your educational record, recent major achievements, list of publications,
  2. a separate motivation letter stating why the proposed project interests you,
  3. the names of three persons who could be contacted for a reference and any other information that might be relevant to your application.

Applications will be evaluated on a first-come, first-served basis, with the final deadline for applications being 15 February 2023.

For information about the application procedure, please contact Linda Verhaar, HR Advisor, recruitment-3mE@tudelft.nl.

Please note:

  •  A pre-employment screening can be part of the selection procedure.
  • You can apply online. We will not process applications sent by email and/or post.
  • Acquisition in response to this vacancy is not appreciated.