High torsion stiffness leafspring flexure element using distributed warping constraints

Marijn Nijenhuis; Mark Naves; Dannis Brouwer

High torsion stiffness leafspring flexure element using distributed warping constraints

Marijn Nijenhuis, Mark Naves, Dannis Brouwer

Precision Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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Abstract

Leafsprings are commonly used in flexure mechanisms to enable repeatable motion and provide support stiffness. In various applications, the torsional stiffness needs to be increased. This paper presents the concept of using warping constraints distributed along the leafspring to increase the torsional stiffness relative to the stiffness in other directions. A beam-based model of nonuniform torsion is used to estimate the relationship between the geometrical design parameters and the expected increase in torsional stiffness. The model predicts that an order of magnitude increase in stiffness is feasible. Compared to other solutions, the distributed warping constraints have a less obtrusive shape that offer more design freedom.

Original language	English
Title of host publication	European Society for Precision Engineering and Nanotechnology, Conference Proceedings - 22nd International Conference and Exhibition, EUSPEN 2022
Editors	Richard K. Leach, A. Akrofi-Ayesu, C. Nisbet, Dishi Phillips
Publisher	EUSPEN
Pages	119-122
Number of pages	4
ISBN (Electronic)	9781998999118
Publication status	Published - 2022
Event	22nd International Conference & Exhibition, EUSPEN 2022 - CERN, Geneva, Switzerland Duration: 30 May 2022 → 3 Jun 2022 Conference number: 22 https://www.euspen.eu/our-events/geneva-2022-programme/

Conference

Conference	22nd International Conference & Exhibition, EUSPEN 2022
Abbreviated title	EUSPEN
Country/Territory	Switzerland
City	Geneva
Period	30/05/22 → 3/06/22
Internet address	https://www.euspen.eu/our-events/geneva-2022-programme/

Keywords

constraints
Flexure mechanism
leaf spring
torsion stiffness
twisting
warping

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Nijenhuis, M., Naves, M., & Brouwer, D. (2022). High torsion stiffness leafspring flexure element using distributed warping constraints. In R. K. Leach, A. Akrofi-Ayesu, C. Nisbet, & D. Phillips (Eds.), European Society for Precision Engineering and Nanotechnology, Conference Proceedings - 22nd International Conference and Exhibition, EUSPEN 2022 (pp. 119-122). EUSPEN.

Nijenhuis, Marijn ; Naves, Mark ; Brouwer, Dannis. / High torsion stiffness leafspring flexure element using distributed warping constraints. European Society for Precision Engineering and Nanotechnology, Conference Proceedings - 22nd International Conference and Exhibition, EUSPEN 2022. editor / Richard K. Leach ; A. Akrofi-Ayesu ; C. Nisbet ; Dishi Phillips. EUSPEN, 2022. pp. 119-122

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title = "High torsion stiffness leafspring flexure element using distributed warping constraints",

abstract = "Leafsprings are commonly used in flexure mechanisms to enable repeatable motion and provide support stiffness. In various applications, the torsional stiffness needs to be increased. This paper presents the concept of using warping constraints distributed along the leafspring to increase the torsional stiffness relative to the stiffness in other directions. A beam-based model of nonuniform torsion is used to estimate the relationship between the geometrical design parameters and the expected increase in torsional stiffness. The model predicts that an order of magnitude increase in stiffness is feasible. Compared to other solutions, the distributed warping constraints have a less obtrusive shape that offer more design freedom.",

keywords = "constraints, Flexure mechanism, leaf spring, torsion stiffness, twisting, warping",

author = "Marijn Nijenhuis and Mark Naves and Dannis Brouwer",

note = "Publisher Copyright: {\textcopyright} European Society for Precision Engineering and Nanotechnology, Conference Proceedings - 22nd International Conference and Exhibition, EUSPEN 2022. All rights reserved.; 22nd International Conference & Exhibition, EUSPEN 2022, EUSPEN ; Conference date: 30-05-2022 Through 03-06-2022",

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language = "English",

pages = "119--122",

editor = "Leach, {Richard K.} and A. Akrofi-Ayesu and C. Nisbet and Dishi Phillips",

booktitle = "European Society for Precision Engineering and Nanotechnology, Conference Proceedings - 22nd International Conference and Exhibition, EUSPEN 2022",

publisher = "EUSPEN",

url = "https://www.euspen.eu/our-events/geneva-2022-programme/",

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Nijenhuis, M , Naves, M & Brouwer, D 2022, High torsion stiffness leafspring flexure element using distributed warping constraints. in RK Leach, A Akrofi-Ayesu, C Nisbet & D Phillips (eds), European Society for Precision Engineering and Nanotechnology, Conference Proceedings - 22nd International Conference and Exhibition, EUSPEN 2022. EUSPEN, pp. 119-122, 22nd International Conference & Exhibition, EUSPEN 2022, Geneva, Switzerland, 30/05/22.

High torsion stiffness leafspring flexure element using distributed warping constraints. / Nijenhuis, Marijn ; Naves, Mark ; Brouwer, Dannis.
European Society for Precision Engineering and Nanotechnology, Conference Proceedings - 22nd International Conference and Exhibition, EUSPEN 2022. ed. / Richard K. Leach; A. Akrofi-Ayesu; C. Nisbet; Dishi Phillips. EUSPEN, 2022. p. 119-122.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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T1 - High torsion stiffness leafspring flexure element using distributed warping constraints

AU - Nijenhuis, Marijn

AU - Naves, Mark

AU - Brouwer, Dannis

N1 - Conference code: 22

PY - 2022

Y1 - 2022

N2 - Leafsprings are commonly used in flexure mechanisms to enable repeatable motion and provide support stiffness. In various applications, the torsional stiffness needs to be increased. This paper presents the concept of using warping constraints distributed along the leafspring to increase the torsional stiffness relative to the stiffness in other directions. A beam-based model of nonuniform torsion is used to estimate the relationship between the geometrical design parameters and the expected increase in torsional stiffness. The model predicts that an order of magnitude increase in stiffness is feasible. Compared to other solutions, the distributed warping constraints have a less obtrusive shape that offer more design freedom.

AB - Leafsprings are commonly used in flexure mechanisms to enable repeatable motion and provide support stiffness. In various applications, the torsional stiffness needs to be increased. This paper presents the concept of using warping constraints distributed along the leafspring to increase the torsional stiffness relative to the stiffness in other directions. A beam-based model of nonuniform torsion is used to estimate the relationship between the geometrical design parameters and the expected increase in torsional stiffness. The model predicts that an order of magnitude increase in stiffness is feasible. Compared to other solutions, the distributed warping constraints have a less obtrusive shape that offer more design freedom.

KW - constraints

KW - Flexure mechanism

KW - leaf spring

KW - torsion stiffness

KW - twisting

KW - warping

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M3 - Conference contribution

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EP - 122

BT - European Society for Precision Engineering and Nanotechnology, Conference Proceedings - 22nd International Conference and Exhibition, EUSPEN 2022

A2 - Leach, Richard K.

A2 - Akrofi-Ayesu, A.

A2 - Nisbet, C.

A2 - Phillips, Dishi

PB - EUSPEN

T2 - 22nd International Conference & Exhibition, EUSPEN 2022

Y2 - 30 May 2022 through 3 June 2022

ER -

High torsion stiffness leafspring flexure element using distributed warping constraints

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