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.
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ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
September 24–28, 2005
Long Beach, California, USA
Conference Sponsors:
- Design Engineering Division and Computers and Information in Engineering Division
ISBN:
0-7918-4744-6
PROCEEDINGS PAPER
Analysis for Stiffness of Large-Deformation Flexure Hinge and Its Application Available to Purchase
Shusheng Bi,
Shusheng Bi
Beihang University, Beijing, China
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Yicun Xu
Yicun Xu
Beihang University, Beijing, China
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Ming Jia
Beihang University, Beijing, China
Jingjun Yu
Beihang University, Beijing, China
Shusheng Bi
Beihang University, Beijing, China
Yicun Xu
Beihang University, Beijing, China
Paper No:
DETC2005-85169, pp. 367-373; 7 pages
Published Online:
June 11, 2008
Citation
Jia, M, Yu, J, Bi, S, & Xu, Y. "Analysis for Stiffness of Large-Deformation Flexure Hinge and Its Application." Proceedings of the ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 7: 29th Mechanisms and Robotics Conference, Parts A and B. Long Beach, California, USA. September 24–28, 2005. pp. 367-373. ASME. https://doi.org/10.1115/DETC2005-85169
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