Multibody modelling and optimization of a curved hinge flexure

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A flexure which retains its support stiffness characteristics for large deflections, is optimized with respect to maximum allowable stress, low actuation stiffness and high support stiffnesses. Such an optimization requires an efficient model which accurately describes the stiffness characteristics and stress distribution of flexures. For this purpose a multibody modelling approach based on a non-linear finite element description is investigated and extended to include the computation of the stress distribution in the deformed configuration. It is shown that the accuracy of the maximum occurring stress is comparable with those obtained from a classical non-linear finite element analysis. An optimized shape of the flexure is found and for deflection angles larger than 7.4�, it is preferable over a single leaf-spring flexure.
Original languageUndefined
Title of host publicationProceedings of The 1st Joint International Conference on Multibody System Dynamics
EditorsAki Mikkola, Werner Schiehlen
Place of PublicationLappeenranta, Finland
PublisherLappeenranta University of Technology
Number of pages10
ISBN (Print)978-952-214-778-3
Publication statusPublished - 25 May 2010
Event1st Joint International Conference on Multibody System Dynamics 2010 - Lappeenranta, Finland, Lappeenranta, Finland
Duration: 25 May 201027 May 2010
Conference number: 1

Publication series

PublisherLappeenranta University of Technology


Conference1st Joint International Conference on Multibody System Dynamics 2010
CityLappeenranta, Finland
Other25-27 May 2010


  • METIS-267215
  • IR-89565

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