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공간형 위치 결정 스테이지를 위한 타원형 및 포물선형 2 자유도 플렉셔 힌지에 대한 해석

Analysis on Elliptic and Parabolic 2-DOF Flexure Hinges for Spatial Positioning Stages

Journal of the Korean Society for Precision Engineering 2023;40(3):229-236.
Published online: March 1, 2023

1 동양미래대학교 로봇자동화공학부

2 유한대학교 자동화공학과

1 School of Robot and Automation Engineering, Dongyang Mirae University

2 Department of Automation Engineering, Yuhan University

#E-mail: jhmoon@yuhan.ac.kr, TEL: +82-2-2610-0752
• Received: October 7, 2022   • Revised: December 10, 2022   • Accepted: December 12, 2022

Copyright © The Korean Society for Precision Engineering

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Citations

Citations to this article as recorded by  Crossref logo
  • Derivation and Verification of Novel Phenomenon-based Theoretical Formulas for the Axial Compliance of Circular Flexure Hinges
    Jun-Hee Moon, Hyun-Pyo Shin
    Journal of the Korean Society for Precision Engineering.2025; 42(1): 47.     CrossRef

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Analysis on Elliptic and Parabolic 2-DOF Flexure Hinges for Spatial Positioning Stages
J. Korean Soc. Precis. Eng.. 2023;40(3):229-236.   Published online March 1, 2023
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Analysis on Elliptic and Parabolic 2-DOF Flexure Hinges for Spatial Positioning Stages
J. Korean Soc. Precis. Eng.. 2023;40(3):229-236.   Published online March 1, 2023
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Analysis on Elliptic and Parabolic 2-DOF Flexure Hinges for Spatial Positioning Stages
Image Image Image Image Image Image Image Image Image
Fig. 1 Cylindrical flexure hinges
Fig. 2 Cutaway views of the cylindrical flexure hinges
Fig. 3 Stiffness comparison between FEM and theoretical analyses for elliptic hinge with fixed transverse radius a (= 10 mm)
Fig. 4 Stiffness comparison between FEM and theoretical analyses for elliptic hinge with fixed longitudinal radius b (= 10 mm)
Fig. 5 Stiffness comparison between FEM and theoretical analyses for parabolic hinge
Fig. 6 Comparison between circular and elliptic notches
Fig. 7 Curve fitting for FEM and theoretical calculation
Fig. 8 Analysis conditions for surface fitting
Fig. 9 Surface fitting for FEM and theoretical calculation
Analysis on Elliptic and Parabolic 2-DOF Flexure Hinges for Spatial Positioning Stages

Stiffnesses resulted from theoretical calculation and finite element analysis for elliptic hinge with fixed transverse radius a (= 10 mm)

b [mm] 2.5 5 10 20 40
Theoretical Ka [N/um] 6.5 8.7 11.9 16.6 23.3
Kb [Nm/rad] 0.6 0.8 1.2 1.6 2.3
FEM Ka [N/um] 4.7 8.3 11.0 14.9 19.4
Kb [Nm/rad] 0.4 0.8 1.2 1.6 2.2

Stiffnesses resulted from theoretical calculation and finite element analysis for elliptic hinge with fixed longitudinal radius b (= 10 mm)

a [mm] 2.5 5 10 20 40
Theoretical Ka [N/um] 47.8 23.9 11.9 6.0 3.0
Kb [Nm/rad] 4.7 2.3 1.2 0.6 0.3
FEM Ka [N/um] 30.3 19.4 11.0 5.8 2.6
Kb [Nm/rad] 3.5 2.3 1.2 0.6 0.2

Stiffnesses resulted from theoretical calculation finite element analysis for parabolic hinge

p 0.025 0.05 0.1 0.2 0.4
Theoretical Ka [N/um] 8.4 11.7 16.4 23.1 32.7
Kb [Nm/rad] 0.8 1.2 1.6 2.3 3.3
FEM Ka [N/um] 7.9 11.0 14.9 19.6 25.5
Kb [Nm/rad] 0.7 1.0 1.5 2.0 2.9

Coefficients of the surface-fitted equations

Theoretical FEM
Axial
stiffness
α 1 0.564 0.401
β 1 -1.005 -0.671
γ 1 0.471 0.259
Bending
stiffness
α 2 0.0515 0.0431
β 2 -1.001 -0.766
γ 2 0.493 0.337
Table 1 Stiffnesses resulted from theoretical calculation and finite element analysis for elliptic hinge with fixed transverse radius a (= 10 mm)
Table 2 Stiffnesses resulted from theoretical calculation and finite element analysis for elliptic hinge with fixed longitudinal radius b (= 10 mm)
Table 3 Stiffnesses resulted from theoretical calculation finite element analysis for parabolic hinge
Table 4 Coefficients of the surface-fitted equations