• Title/Summary/Keyword: flexure hinge

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Optimal Design of 3D Printer based Piezo-driven Vertical Micro-positioning Stage (3D 프린터 기반 수직형 마이크로 모션 스테이지의 최적설계)

  • Kim, Jung Hyun
    • The Journal of Korea Robotics Society
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    • v.12 no.1
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    • pp.78-85
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    • 2017

  • This paper presents the development of a 3D printer based piezo-driven vertical micro-positioning stage. The stage consists of two flexure bridge structures which amplify and transfer the horizontal motion of the piezo-element into vertical motion of the end-effector. The stage is fabricated with ABS material using a precision 3D printer. This enables a one-body design eliminating the need for assembly, and significantly increases the freedom in design while shortening fabrication time. The design of the stage was optimized using response surface analysis method. Experimental results are presented which demonstrate 100nm stepping in the vertical out-of-plane direction. The results demonstrate the future possibilities of applying 3D printers and ABS material in fabricating linear driven motion stages.

  • https://doi.org/10.7746/jkros.2017.12.1.078 인용 PDF KSCI

Earthquake Response Analysis of a RC Bridge employing a Point Hinge Model (포인트 힌지 모델을 적용한 철근콘크리트 교량의 지진응답 해석)

  • 이도형;전종수;박대효
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 2003.04a
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    • pp.419-426
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    • 2003

  • Simplified modeling approach for the seismic behavior of a reinforced concrete bridge is investigated in this paper. For this purpose, a hysteretic axial-flexure interaction model was developed and implemented into a nonlinear finite element analysis program. Thus, the seismic response of reinforced concrete bridge piers was evaluated by the simplified point hinge representations. Comparative studies for reinforced concrete bridge piers indicated that the analytical predictions obtained with the new formulations showed a good correlation with experimental results. In addition, seismic response analysis of a reinforced concrete bridge utilizing the simplified point hinge model revealed the adequacy and applicability of the present development.

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