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СпутникиРНSpaceXРоскосмосNASAThe design of high-precision flexible hinges requires a comprehensive assessment of the influence of temperature-strain coupling response characteristics, especially in a wide temperature range where the thermal stress deformation of the material will significantly reduce the motion accuracy. This paper proposes a design method to suppress the parasitic motion of hinge thermal deformation under temperature influence, addressing the temperature drift problem of flexible hinges in variable temperature environments. First, a novel method is presented to establish an equivalent flexibility matrix incorporating temperature parameters, enabling the design of a class of flexible hinges with temperature drift suppression. The correctness of this matrix is then verified through finite element simulation while analyzing how variations in basic unit parameters affect the hinge’s equivalent flexibility matrix under thermal conditions. Finally, using a 3-PPP flexible parallel mechanism as an example for thermal coupling simulation, the study demonstrates significant improvements: coupling errors in reed-notched flexible parallel mechanisms are reduced by 50%, with all thermal coupling errors decreasing by 30%. In comparison, reed-type flexible parallel mechanisms show an 80% reduction in coupling and thermal coupling errors under temperature fields. Results indicate that the newly designed flexible hinge effectively reduces temperature drift phenomena and enhances motion accuracy in thermally variable environments.
The design of high-precision flexible hinges requires a comprehensive assessment of the influence of temperature-strain coupling response characteristics, especially in a wide temperature range where the thermal stress deformation of the material will significantly reduce the motion accuracy. This paper proposes a design method to suppress the parasitic motion of hinge thermal deformation under temperature influence, addressing the temperature drift problem of flexible hinges in variable temperature environments. First, a novel method is presented to establish an equivalent flexibility matrix incorporating temperature parameters, enabling the design of a class of flexible hinges with temperature drift suppression. The correctness of this matrix is then verified through finite element simulation while analyzing how variations in basic unit parameters affect the hinge’s equivalent flexibility matrix under thermal conditions. Finally, using a 3-PPP flexible parallel mechanism as an example for thermal coupling simulation, the study demonstrates significant improvements: coupling errors in reed-notched flexible parallel mechanisms are reduced by 50%, with all thermal coupling errors decreasing by 30%. In comparison, reed-type flexible parallel mechanisms show an 80% reduction in coupling and thermal coupling errors under temperature fields. Results indicate that the newly designed flexible hinge effectively reduces temperature drift phenomena and enhances motion accuracy in thermally variable environments.
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Supported by the National Natural Science Foundation of China (52275032), the Natural Science Foundation of Hebei Province (E2022203077), the Provincial Science and Technology Program of Hebei Province (22371801D), and the Scientific and Technological Research and Development Program of Hebei Province-Central-Guided Local Science and Technology Development Funds (246Z1818G).
Yanshan University, Qinhuangdao, 066004, People’s Republic of China
Feng Yue, Shuaishuai Cao, Wenshuo Han & Shihua Li
Parallel Robot and Mechatronic System Laboratory of Hebei Province, Yanshan University, Qinhuangdao, 066004, People’s Republic of China
Feng Yue, Shuaishuai Cao, Wenshuo Han & Shihua Li
Authors
Correspondence to Shihua Li.
School of Mechanical Engineering, Zhejiang University, Hangzhou, Zhejiang, China
Jianrong Tan
School of Mechanical Engineering, Zhejiang University, Hangzhou, Zhejiang, China
Zhenyu Liu
Mechanical Engineering, Zhejiang University, Hangzhou, Zhejiang, China
Weifei Hu
© 2027 The Chinese Mechanical Engineering Society
Yue, F., Cao, S., Han, W., Li, S. (2027). Novel Small-Axis-Drift Flexible Hinge Design: A Study of Temperature-Displacement Coupling Suppression Methods. In: Tan, J., Liu, Z., Hu, W. (eds) Advances in Mechanical Design. ICMD 2025. Mechanisms and Machine Science, vol 206. Springer, Singapore. https://doi.org/10.1007/978-981-95-7904-4_54
Download citationDOI: https://doi.org/10.1007/978-981-95-7904-4_54
Published: 25 June 2026
Publisher Name: Springer, Singapore
Print ISBN: 978-981-95-7903-7
Online ISBN: 978-981-95-7904-4
eBook Packages: Mechanical Engineering (R0)Springer Nature Proceedings excluding Computer Science