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Analysis for stiffness of large-deformation flexure hinge and its application

  • Jia Ming*
  • , Yu Jingjun
  • , Bi Shusheng
  • , Xu Yicun
  • *Corresponding author for this work
  • Beihang University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

The paper discusses the stiffness of flexure hinge made by rubber material. A revolute compliant joint made by rubber is proposed which offer improvements over existing flexures made by metal in the qualities of large range of motion, long lift, and reduced weight. Based on the theory of nonlinear deformation and the characters of strain-energy functions of Mooney - Rivlin model, the stiffness of rubber flexure hinge is obtained by piece-wise linearization of the stress-strain curve. Some geometric parameters such as t/R ratios affecting the stiffness of rubber hinge are calculated. Thereby, the problem of the relationship between moment and large angle deformation is resolved. The result from the FEA performed on the various flexures to find the angle displacement shows ideal consistency. Finally, the application of rubber flexure hinge using in the compliant thorax of micro air vehicle with flapping wings is given.

Original languageEnglish
Title of host publicationProceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conferences - DETC2005
Subtitle of host publication29th Mechanisms and Robotics Conference
Pages367-373
Number of pages7
StatePublished - 2005
EventDETC2005: ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference - Long Beach, CA, United States
Duration: 24 Sep 2005 → 28 Sep 2005

Publication series

NameProceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference - DETC2005
Volume7 A

Conference

ConferenceDETC2005: ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
Country/TerritoryUnited States
CityLong Beach, CA
Period24/09/05 → 28/09/05

Keywords

  • Compliant thorax
  • Flexure hinge
  • Large deformation
  • Stiffness

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