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Theoretical Modeling and Experimental Verification of Elliptical Hyperbolic Hybrid Flexure Hinges.

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Title: Theoretical Modeling and Experimental Verification of Elliptical Hyperbolic Hybrid Flexure Hinges.
Authors: Wang, Yan, Zhang, Lizhong, Meng, Lixin, Lu, Hongjie, Ma, Yongheng
Source: Symmetry (20738994); Mar2024, Vol. 16 Issue 3, p345, 20p
Subject Terms: FLEXURE, HINGES, FINITE element method, ENGINEERING design
Abstract: A flexure hinge composed of elliptical and hyperbolic hybrid configurations is developed and analyzed in this paper. The analytical models of compliance, rotation accuracy, and maximum stress of the flexure hinge are established, and the correctness of the models is validated by finite element analysis and experiments. The influence of structural parameters on compliance and rotation accuracy is discussed. The concept of compliance stress ratio is proposed to assess the deformation capacity of flexure hinges when subjected to the same stress, which provides a basis for quantitatively comparing the comprehensive performance of flexure hinges. The performance of the hybrid flexure hinge is compared with that of elliptical, hyperbolic, and circular flexure hinges by taking the compliance accuracy ratio and the compliance stress ratio as the performance evaluation indexes. The results show that the hybrid flexure hinge combines the advantages of hyperbolic and elliptical hinges and has a balanced performance in compliance, rotation accuracy, and low stress. The designed hybrid flexure hinge is suitable for the support structure of fast steering mirrors, which provides a valuable reference for the engineering optimization design of flexure hinges. [ABSTRACT FROM AUTHOR]
Copyright of Symmetry (20738994) is the property of MDPI and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Label: Title
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  Data: Theoretical Modeling and Experimental Verification of Elliptical Hyperbolic Hybrid Flexure Hinges.
– Name: Author
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  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Wang%2C+Yan%22">Wang, Yan</searchLink><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Lizhong%22">Zhang, Lizhong</searchLink><br /><searchLink fieldCode="AR" term="%22Meng%2C+Lixin%22">Meng, Lixin</searchLink><br /><searchLink fieldCode="AR" term="%22Lu%2C+Hongjie%22">Lu, Hongjie</searchLink><br /><searchLink fieldCode="AR" term="%22Ma%2C+Yongheng%22">Ma, Yongheng</searchLink>
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  Data: Symmetry (20738994); Mar2024, Vol. 16 Issue 3, p345, 20p
– Name: Subject
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  Group: Su
  Data: <searchLink fieldCode="DE" term="%22FLEXURE%22">FLEXURE</searchLink><br /><searchLink fieldCode="DE" term="%22HINGES%22">HINGES</searchLink><br /><searchLink fieldCode="DE" term="%22FINITE+element+method%22">FINITE element method</searchLink><br /><searchLink fieldCode="DE" term="%22ENGINEERING+design%22">ENGINEERING design</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A flexure hinge composed of elliptical and hyperbolic hybrid configurations is developed and analyzed in this paper. The analytical models of compliance, rotation accuracy, and maximum stress of the flexure hinge are established, and the correctness of the models is validated by finite element analysis and experiments. The influence of structural parameters on compliance and rotation accuracy is discussed. The concept of compliance stress ratio is proposed to assess the deformation capacity of flexure hinges when subjected to the same stress, which provides a basis for quantitatively comparing the comprehensive performance of flexure hinges. The performance of the hybrid flexure hinge is compared with that of elliptical, hyperbolic, and circular flexure hinges by taking the compliance accuracy ratio and the compliance stress ratio as the performance evaluation indexes. The results show that the hybrid flexure hinge combines the advantages of hyperbolic and elliptical hinges and has a balanced performance in compliance, rotation accuracy, and low stress. The designed hybrid flexure hinge is suitable for the support structure of fast steering mirrors, which provides a valuable reference for the engineering optimization design of flexure hinges. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label:
  Group: Ab
  Data: <i>Copyright of Symmetry (20738994) is the property of MDPI and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/sym16030345
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      – Code: eng
        Text: English
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        PageCount: 20
        StartPage: 345
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        Type: general
      – SubjectFull: HINGES
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      – SubjectFull: FINITE element method
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      – SubjectFull: ENGINEERING design
        Type: general
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      – TitleFull: Theoretical Modeling and Experimental Verification of Elliptical Hyperbolic Hybrid Flexure Hinges.
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            NameFull: Wang, Yan
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            NameFull: Meng, Lixin
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            – D: 01
              M: 03
              Text: Mar2024
              Type: published
              Y: 2024
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