Postdoc Active Damping of Flexible Mechanism Using Distributed Piezo-electric Actuators

Updated: 5 months ago
Deadline: 15 Jun 2023

12 May 2023
Job Information

Delft University of Technology (TU Delft)
Research Field

Researcher Profile

Recognised Researcher (R2)

Application Deadline

15 Jun 2023 - 21:59 (UTC)
Type of Contract

Job Status

Not Applicable
Is the job funded through the EU Research Framework Programme?

Not funded by an EU programme
Is the Job related to staff position within a Research Infrastructure?


Offer 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.
Unique aspects of this project are the collaboration in a team and the immediate industrial relevance of the research. You will be part of a team of 2 PhDs who work together with scientists and research engineers from TU Delft and the companies involved i.e. ASML, VDL, Demcon and PI. This multi-disciplinary team setting provides a unique learning opportunity. Each of the researchers work on a dedicated part of the project, while at the same time closely collaborating with the rest of the team to ensure all parts will eventually fit together.

Specific Requirements
  • Strong background in active/passive damping
  • Capable of performing experimental research
  • Capable of multiphysics modeling
  • Familiarty with acoustic metamaterial/ Active metamaterial is a plus
  • 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.

Additional Information

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, TU Delft has the Coming to Delft Service . This service provides information for new international employees to help you prepare the relocation and to settle in the Netherlands. The Coming to Delft Service offers a Dual Career Programme for partners and they organise events to expand your (social) network.

This position is a temporary assignment for two years.

Selection process

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

  • A detailed curriculum vitae that explicitly states your educational record, recent major achievements, list of publications,
  • A separate motivation letter stating why the proposed project interests you.
  • Applications will be evaluated on a first-come, first-served basis, with the final deadline for applications being 15 June 2023.

    For more information about the application procedure, please contact Linda Verhaar, HR Advisor, .

    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.
    - Please do not contact us for unsolicited services.

    Additional comments

    For more information about this vacancy, please contact Hassan HosseinNia, .

    Website for additional job details

    Work Location(s)
    Number of offers available
    Delft University of Technology
    Postal Code
    2628 CD
    Mekelweg 2

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    Mekelweg 2
    Postal Code

    2628 CD

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