Large stroke performance optimization of spatial flexure hinges

D.H. Wiersma; S.E. Boer; R.G.K.M. Aarts; D.M. Brouwer

Large stroke performance optimization of spatial flexure hinges

D.H. Wiersma, S.E. Boer, R.G.K.M. Aarts, D.M. Brouwer

Faculty of Engineering Technology

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

7 Citations (Scopus)

389 Downloads (Pure)

Abstract

Flexure hinges inherently lose stiffness in supporting directions when deflected. In this paper a method is presented for optimizing the geometry of flexure hinges, while supporting stiffnesses are retained. These hinges are subjected to a load and deflected an angle of up to ±20°. The measure of performance is defined by the first unwanted eigenfrequency, which is closely related to the supporting stiffnesses. During the optimization, constraints are applied to the actuation moment and the maximum occurring stress. Evaluations of three cross flexure hinge types and a butterfly flexure hinge are presented. A flexible multibody modeling approach is used for efficient modeling. Each of these hinge types is described by a parameterized geometric model. The obtained optimal hinge designs are validated with a finite element model and show good agreement. The optimal solution of the butterfly flexure hinge shows the least decrease in the supporting stiffnesses of the evaluated hinges.

Original language	English
Title of host publication	ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
Subtitle of host publication	Volume 6: 1st Biennial International Conference on Dynamics for Design; 14th International Conference on Advanced Vehicle Technologies
Place of Publication	Chicago, IL
Publisher	American Society of Mechanical Engineers (ASME)
Pages	115-124
ISBN (Print)	978-0-7918-4505-9
Publication status	Published - 12 Aug 2012
Event	1st Biennial International Conference on Dynamics for Design 2012 - Chicago, United States Duration: 12 Aug 2012 → 15 Aug 2012 Conference number: 1

Conference

Conference	1st Biennial International Conference on Dynamics for Design 2012
Country	United States
City	Chicago
Period	12/08/12 → 15/08/12
Other	held as part of the 2012 ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (IDETC/CIE)

Keywords

METIS-288703
IR-81989

Access to Document

DETC2012-70502
open

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Wiersma, D. H., Boer, S. E., Aarts, R. G. K. M., & Brouwer, D. M. (2012). Large stroke performance optimization of spatial flexure hinges. In ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference: Volume 6: 1st Biennial International Conference on Dynamics for Design; 14th International Conference on Advanced Vehicle Technologies (pp. 115-124). American Society of Mechanical Engineers (ASME).

Wiersma, D.H. ; Boer, S.E. ; Aarts, R.G.K.M. ; Brouwer, D.M. / Large stroke performance optimization of spatial flexure hinges. ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference: Volume 6: 1st Biennial International Conference on Dynamics for Design; 14th International Conference on Advanced Vehicle Technologies. Chicago, IL : American Society of Mechanical Engineers (ASME), 2012. pp. 115-124

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title = "Large stroke performance optimization of spatial flexure hinges",

abstract = "Flexure hinges inherently lose stiffness in supporting directions when deflected. In this paper a method is presented for optimizing the geometry of flexure hinges, while supporting stiffnesses are retained. These hinges are subjected to a load and deflected an angle of up to ±20°. The measure of performance is defined by the first unwanted eigenfrequency, which is closely related to the supporting stiffnesses. During the optimization, constraints are applied to the actuation moment and the maximum occurring stress. Evaluations of three cross flexure hinge types and a butterfly flexure hinge are presented. A flexible multibody modeling approach is used for efficient modeling. Each of these hinge types is described by a parameterized geometric model. The obtained optimal hinge designs are validated with a finite element model and show good agreement. The optimal solution of the butterfly flexure hinge shows the least decrease in the supporting stiffnesses of the evaluated hinges.",

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author = "D.H. Wiersma and S.E. Boer and R.G.K.M. Aarts and D.M. Brouwer",

year = "2012",

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booktitle = "ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference",

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address = "United States",

note = "1st Biennial International Conference on Dynamics for Design 2012 ; Conference date: 12-08-2012 Through 15-08-2012",

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Wiersma, DH, Boer, SE, Aarts, RGKM & Brouwer, DM 2012, Large stroke performance optimization of spatial flexure hinges. in ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference: Volume 6: 1st Biennial International Conference on Dynamics for Design; 14th International Conference on Advanced Vehicle Technologies. American Society of Mechanical Engineers (ASME), Chicago, IL, pp. 115-124, 1st Biennial International Conference on Dynamics for Design 2012, Chicago, United States, 12/08/12.

Large stroke performance optimization of spatial flexure hinges. / Wiersma, D.H.; Boer, S.E.; Aarts, R.G.K.M.; Brouwer, D.M.

ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference: Volume 6: 1st Biennial International Conference on Dynamics for Design; 14th International Conference on Advanced Vehicle Technologies. Chicago, IL : American Society of Mechanical Engineers (ASME), 2012. p. 115-124.

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

TY - GEN

T1 - Large stroke performance optimization of spatial flexure hinges

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AU - Boer, S.E.

AU - Aarts, R.G.K.M.

AU - Brouwer, D.M.

N1 - Conference code: 1

PY - 2012/8/12

Y1 - 2012/8/12

N2 - Flexure hinges inherently lose stiffness in supporting directions when deflected. In this paper a method is presented for optimizing the geometry of flexure hinges, while supporting stiffnesses are retained. These hinges are subjected to a load and deflected an angle of up to ±20°. The measure of performance is defined by the first unwanted eigenfrequency, which is closely related to the supporting stiffnesses. During the optimization, constraints are applied to the actuation moment and the maximum occurring stress. Evaluations of three cross flexure hinge types and a butterfly flexure hinge are presented. A flexible multibody modeling approach is used for efficient modeling. Each of these hinge types is described by a parameterized geometric model. The obtained optimal hinge designs are validated with a finite element model and show good agreement. The optimal solution of the butterfly flexure hinge shows the least decrease in the supporting stiffnesses of the evaluated hinges.

AB - Flexure hinges inherently lose stiffness in supporting directions when deflected. In this paper a method is presented for optimizing the geometry of flexure hinges, while supporting stiffnesses are retained. These hinges are subjected to a load and deflected an angle of up to ±20°. The measure of performance is defined by the first unwanted eigenfrequency, which is closely related to the supporting stiffnesses. During the optimization, constraints are applied to the actuation moment and the maximum occurring stress. Evaluations of three cross flexure hinge types and a butterfly flexure hinge are presented. A flexible multibody modeling approach is used for efficient modeling. Each of these hinge types is described by a parameterized geometric model. The obtained optimal hinge designs are validated with a finite element model and show good agreement. The optimal solution of the butterfly flexure hinge shows the least decrease in the supporting stiffnesses of the evaluated hinges.

KW - METIS-288703

KW - IR-81989

M3 - Conference contribution

SN - 978-0-7918-4505-9

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EP - 124

BT - ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference

PB - American Society of Mechanical Engineers (ASME)

CY - Chicago, IL

T2 - 1st Biennial International Conference on Dynamics for Design 2012

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Wiersma DH, Boer SE, Aarts RGKM , Brouwer DM. Large stroke performance optimization of spatial flexure hinges. In ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference: Volume 6: 1st Biennial International Conference on Dynamics for Design; 14th International Conference on Advanced Vehicle Technologies. Chicago, IL: American Society of Mechanical Engineers (ASME). 2012. p. 115-124