Rommers, Jelle

PhD candidate

Jelle Rommers is a PhD student in the Mechatronic Systems Design group at TU Delft. His research involves the design of flexure -or compliant- mechanisms with complex geometries. Applications range from precision positioning systems to medical orthoses. After obtaining his MSc degree in Mechanical Engineering at TU Delft in 2015, Jelle has worked in the Solar PV industry for several years before starting his PhD position. His promotor and co-promotor are Just L. Herder and Volkert van der Wijk.

Research Interests
  • Flexures with complex geometries
  • Compliant mechanisms
  • Large range of motion flexures
  • Support stiffness
  • Design methods
The Möbius project

The Möbius project, of which Jelle is one of the researchers, is a collaboration between TU Delft, UTwente and Industry. A summary: “Flexure mechanisms allow motion due to deformation of slender segments. Consequently, they have no friction or backlash which makes them popular in many areas of precision engineering. Classically, they are essentially planar, composed of flat leaf springs. Recently, the advent of Additive Manufacturing has opened a new world of exotic geometries that potentially increase compactness and performance while reducing cost. However, no synthesis methods or efficient analysis tools exist for these truly spatial flexure mechanisms. The present project aims to provide these, along with a range of scientific demonstrators and industrially relevant prototypes with spatially curved flexure systems that will pair compactness with unprecedented performance.” (Text from STW, project STW-HTSM 14665).

Supervision

Current Master students:

  • Thomas A.A. Soek: complex flexures for motion stages
  • Dies M. Mulder: complex flexures for gravity balancing
  • Pim Vugts: compliant hip orthosis
  • Boris Daan: compliant hexapods
  • Neil Smit: support stiffness
  • Arjan de Wildt: flow-induced vibrations

Past Master students:

  • Roel van Eekeren: “An intuitive method to design load displacement characteristics for nonlinear springs in parallelogram linkages” (2019)
  • Ab Broshuis: “Negative Stiffness in Compliant Shell Mechanisms: To develop a passive stroke rehabilitation device” (2019)
Awards

‘Compliant Mechanisms Award’ for the paper “Rommers J, Radaelli G, Herder JL (2016) A pseudo rigid body model of a single vertex compliant-facet origami mechanism (SF-COFOM)”, by the Design Engineering Division Mechanisms and Robotics Committee at the 2016 ASME International Design Engineering Technical Conferences, August 21-24, Charlotte, North Carolina.

Publications
  1. Rommers, J., and J. L. Herder. "Design of a Folded Leaf Spring with high support stiffness at large displacements using the Inverse Finite Element Method." IFToMM World Congress on Mechanism and Machine Science. Springer, Cham, 2019.
  2.  Rommers, J., Naves, M., Brouwer, D. M., & Herder, J. L. “A large range spatial linear guide with torsion reinforcement structures”. ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers Digital Collection, 2018.
  3. Rommers, Jelle, Giuseppe Radaelli, and Just L. Herder. "A design tool for a single vertex compliant-facet origami mechanism (sv-cofom) including torsional hinge lines." ASME Journal of Mechanism and Robotics (2017).
  4. Rommers, Jelle, Giuseppe Radaelli, and Just L. Herder. "Pseudo-Rigid-Body Modeling of a Single Vertex Compliant-Facet Origami Mechanism." ASME Journal of Mechanisms and Robotics (2017).
  5. Rommers, J., G. Radaelli, and J. L. Herder. "Inspiration from folding patterns." Mikroniek: vakblad voor precisie-technologie 57.3 (2017).
  6. Rommers, Jelle, Giuseppe Radaelli, and Just Herder. "A Pseudo Rigid Body Model of a Single Vertex Compliant-Facet Origami Mechanism (SV-COFOM)." ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers Digital Collection, 2016.

 

 

 

 

 

Jelle Rommers