打通型雙串聯與三串聯柔性鉸鏈設計與性能比較

邱麗芳; 王晶琳; 冷迎春; 王棟

doi:10.13374/j.issn2095-9389.2017.05.015

打通型雙串聯與三串聯柔性鉸鏈設計與性能比較

doi: 10.13374/j.issn2095-9389.2017.05.015

北京科技大學機械工程學院, 北京 100083

基金項目:

國家自然科學基金資助項目（51475037）

詳細信息

中圖分類號: TH122
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出版歷程
- 收稿日期: 2016-07-29

Design and performance comparison of double-series and triple-series flexure hinges

School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China

摘要

摘要: 平面折展柔順機構（lamina emergent mechanisms，LEMs）的重要組成部分之一是柔性鉸鏈，因此設計新型的平面折展扭轉鉸鏈（lamina emergent torsional joint，LET）能夠對其運動起到十分關鍵的作用.本文提出了一種打通型LET柔性鉸鏈，設計了打通型雙串聯柔性鉸鏈和打通型三串聯柔性鉸鏈的兩種結構形式，分別推導出了兩種鉸鏈的彎曲等效剛度計算公式.通過對設計實例的理論分析與有限元分析，驗證了等效剛度計算公式的正確性.將外形尺寸相同的打通型雙串聯、三串聯柔性鉸鏈與外LET鉸鏈進行了彎曲以及拉壓性能的對比，結果表明，打通型三串聯LET柔性鉸鏈在拉壓性能下降不明顯的情況下，能夠較大幅度地提升彎曲性能.
- 平面折展柔順機構 /
- 平面折展扭轉鉸鏈 /
- 串聯式柔性鉸鏈 /
- 等效剛度 /
- 有限元
Abstract: The flexible hinge is one of the most important components in lamina emergent mechanisms (LEMs), so the design of a new type of lamina emergent torsional (LET) joint can play a key role in its movement performance. This paper presents double- and triple-series LET flexure hinges, designs the structure of the two hinges, and derives the calculation formula for their bending equivalent stiffnesses. Through theoretical and finite element analyses of the design example, verifies the correctness of the calculation formula for equivalent stiffness. By comparing the bending, tension, and compression performances of the double-and triple-series LET flexure hinges with those of the outside LET flexure hinge, which shares the same outline dimensions of the former, it can be concluded that the triple-series LET flexure hinge can greatly enhance bending performance without any obvious decrease in its tension and compression performances.
- lamina emergent mechanisms /
- lamina emergent torsional joint /
- series flexure hinge /
- equivalent stiffness /
- finite element

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參考文獻(16)

[2]	Jacobsen J O, Winder B G, Howell L L, et al. Lamina emergent mechanisms and their basic elements. J Mech Rob, 2009, 2(1):011003
[4]	Yu Y Q, Howell L L, Lusk C, et al. Dynamic modeling of compliant mechanisms based on the pseudo-rigid-body model. J Mech Des, 2005, 127(4):760
[5]	Olsen B M, Issac Y, Howell L L, et al. Utilizing a classification scheme to facilitate rigid-body replacement for compliant mechanism design//ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Montreal, 2010:475
[6]	Lyon S M, Howell L L. A simplified pseudo-rigid-body model for fixed-fixed flexible segments//ASME 2002 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Montreal, 2002:23
[9]	Merriam E G, Colton M, Magleby S, et al. The design of a fully compliant statically balanced mechanism//ASME 2013 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference. Portland, 2013:V06AT07A035
[10]	Pluimers P J, Tolou N, Jensen B D, et al. A compliant on/off connection mechanism for preloading statically balanced compliant mechanisms//ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Chicago, 2012:373
[11]	Tanner J D, Grames C, Jensen B D, et al. Millimeter-scale robotic mechanisms using carbon nanotube composite structures. J Mech Rob, 2015, 7(2):021001
[12]	Kemeny D C, Howell L L, Magleby S P. Using compliant mechanisms to improve manufacturability in MEMS//ASME 2002 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Montreal, 2002:247
[13]	Gollnick P S, Magleby S P, Howell L L. An introduction to multi-layer lamina emergent mechanisms. J Mech Des, 2011, 133(8):081006
[14]	Jacobsen J O, Chen G M, Howell L L, et al. Lamina emergent torsional (LET) joint. Mech Machine Theory, 2009, 44(11):2098
[16]	Delimont I L, Magleby S P, Howell L L. Evaluating compliant hinge geometries for origami-inspired mechanisms. J Mech Rob, 2015, 7(1):011009
[17]	Wilding S E, Howell L L, Magleby S P. Introduction of planar compliant joints designed for combined bending and axial loading conditions in lamina emergent mechanisms. Mech Machine Theory, 2012, 56:1
[18]	Fowler R M, Maselli A, Pluimers P, et al. Flex-16:a large-displacement monolithic compliant rotational hinge. Mech Machine Theory, 2014, 82:203
[19]	Aten Q T, Jensen B D, Howell L L. Geometrically non-linear analysis of thin-film compliant MEMS via shell and solid elements. Finite Elem Anal Des, 2012, 49(1):70
[20]	Qiu L F, Yin S Q, Xie Z T. Failure analysis and performance comparison of Triple-LET and LET flexure hinges. Eng Failure Anal, 2016, 66:35
[21]	Chen G M, Howell L L. Two general solutions of torsional compliance for variable rectangular cross-section hinges in compliant mechanisms. Precision Eng, 2009, 33(3):268