Large stroke performance optimization of spatial flexure hinges

D.H. Wiersma, S.E. Boer, R.G.K.M. Aarts, D.M. Brouwer

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

7 Citations (Scopus)
328 Downloads (Pure)

Abstract

Flexure hinges inherently lose stiffness in supporting directions when deflected. In this paper a method is presented for optimizing the geometry of flexure hinges, while supporting stiffnesses are retained. These hinges are subjected to a load and deflected an angle of up to ±20°. The measure of performance is defined by the first unwanted eigenfrequency, which is closely related to the supporting stiffnesses. During the optimization, constraints are applied to the actuation moment and the maximum occurring stress. Evaluations of three cross flexure hinge types and a butterfly flexure hinge are presented. A flexible multibody modeling approach is used for efficient modeling. Each of these hinge types is described by a parameterized geometric model. The obtained optimal hinge designs are validated with a finite element model and show good agreement. The optimal solution of the butterfly flexure hinge shows the least decrease in the supporting stiffnesses of the evaluated hinges.
Original languageEnglish
Title of host publicationASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
Subtitle of host publicationVolume 6: 1st Biennial International Conference on Dynamics for Design; 14th International Conference on Advanced Vehicle Technologies
Place of PublicationChicago, IL
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages115-124
ISBN (Print)978-0-7918-4505-9
Publication statusPublished - 12 Aug 2012
Event1st Biennial International Conference on Dynamics for Design 2012 - Chicago, United States
Duration: 12 Aug 201215 Aug 2012
Conference number: 1

Conference

Conference1st Biennial International Conference on Dynamics for Design 2012
CountryUnited States
CityChicago
Period12/08/1215/08/12
Otherheld as part of the 2012 ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (IDETC/CIE)

Keywords

  • METIS-288703
  • IR-81989

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    Wiersma, D. H., Boer, S. E., Aarts, R. G. K. M., & Brouwer, D. M. (2012). Large stroke performance optimization of spatial flexure hinges. In ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference: Volume 6: 1st Biennial International Conference on Dynamics for Design; 14th International Conference on Advanced Vehicle Technologies (pp. 115-124). Chicago, IL: American Society of Mechanical Engineers (ASME).