Mechanical Sciences
Mechanical Sciences
Mechanical Sciences
Articles | Volume 16, issue 1
Articles | Volume 16, issue 1
https://doi.org/10.5194/ms-16-227-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ms-16-227-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 16, issue 1
Research article
 | 
06 May 2025
Research article |  | 06 May 2025

Design and analysis of a two-stage constant-torque flexure hinge (TS-CTFH) based on fixed-rotation constrained circular-arc segments

Chongxiang Li, Lifang Qiu, Yue Yu, Cuiying Jiang, and Shenyuan Dai

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Latest update: 17 Sep 2026
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Short summary
This study proposed an analytical model of a fixed-rotation constrained-arc segment. Based on this, a novel two-stage constant-torque bending hinge is designed, and an optimization study is carried out. Finally, the feasibility of the design scheme is verified by theoretical analysis, finite-element analysis, and experiments. The new bending hinge provides a proficient solution for the design of fixtures, joint rehabilitation devices, and human activity assistive devices.
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