Design of a compliant monolithic internally statically balanced four-bar mechanism

L. Berntsen; D. Gosenshuis; Just Herder

doi:10.1115/DETC2014-35054

Design of a compliant monolithic internally statically balanced four-bar mechanism

L. Berntsen, D. Gosenshuis, Just Herder

Mechatronic Systems Design

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

3 Citations (Scopus)

Abstract

nstigated by the need to statically balance compliant mechanisms, this paper presents a compliant internally static balanced monolithic four-bar linkage which can be used as generic building block in any compliant mechanism. The pivots of the four-bar are made compliant by the use of initially curved leaf springs. The balancing energy is provided by two pre-loaded opposing cantilever leaf springs that follow a circular path imposed by the input link in a range of forty degrees. The monolithic four-bar and its balancing mechanism are dimensioned by means of an analytical model (decoupled segments), optimized with a FE-analysis (coupled), and validated with a prototype and accompanying experiment. FEA shows a peak moment reduction of 95% (elastic material, working range: 40°), and the experiment of a lasercut 10 mm thick PMMA (visco-elastic material) prototype shows a peak moment reduction of 63% (working range: 36°) up to 88% (working range: 20°).

Original language	English
Title of host publication	Proceedings ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
Subtitle of host publication	Volume 5A: 38th Mechanisms and Robotics Conference
Place of Publication	New York, NY, USA
Publisher	ASME
Number of pages	13
Volume	5A
ISBN (Print)	978-0-7918-4636-0
DOIs	https://doi.org/10.1115/DETC2014-35054
Publication status	Published - 2014
Event	38th Mechanisms and Robotics Conference, Buffalo, NY, USA - New York, NY, USA Duration: 17 Aug 2014 → 20 Aug 2014

Conference

Conference	38th Mechanisms and Robotics Conference, Buffalo, NY, USA
Period	17/08/14 → 20/08/14

Bibliographical note

Paper No. DETC2014-35054

Keywords

design
finite element analysis
engineering prototypes
springs
compliant mechanisms
blocks
linkages
cantilevers

Access to Document

10.1115/DETC2014-35054

http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=2090834

Cite this

Berntsen, L., Gosenshuis, D., & Herder, J. (2014). Design of a compliant monolithic internally statically balanced four-bar mechanism. In Proceedings ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference: Volume 5A: 38th Mechanisms and Robotics Conference (Vol. 5A). Article V05AT08A040 ASME. https://doi.org/10.1115/DETC2014-35054

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title = "Design of a compliant monolithic internally statically balanced four-bar mechanism",

abstract = "nstigated by the need to statically balance compliant mechanisms, this paper presents a compliant internally static balanced monolithic four-bar linkage which can be used as generic building block in any compliant mechanism. The pivots of the four-bar are made compliant by the use of initially curved leaf springs. The balancing energy is provided by two pre-loaded opposing cantilever leaf springs that follow a circular path imposed by the input link in a range of forty degrees. The monolithic four-bar and its balancing mechanism are dimensioned by means of an analytical model (decoupled segments), optimized with a FE-analysis (coupled), and validated with a prototype and accompanying experiment. FEA shows a peak moment reduction of 95% (elastic material, working range: 40°), and the experiment of a lasercut 10 mm thick PMMA (visco-elastic material) prototype shows a peak moment reduction of 63% (working range: 36°) up to 88% (working range: 20°).",

keywords = "design, finite element analysis, engineering prototypes, springs, compliant mechanisms, blocks, linkages, cantilevers",

author = "L. Berntsen and D. Gosenshuis and Just Herder",

note = "Paper No. DETC2014-35054; 38th Mechanisms and Robotics Conference, Buffalo, NY, USA ; Conference date: 17-08-2014 Through 20-08-2014",

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Berntsen, L, Gosenshuis, D & Herder, J 2014, Design of a compliant monolithic internally statically balanced four-bar mechanism. in Proceedings ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference: Volume 5A: 38th Mechanisms and Robotics Conference. vol. 5A, V05AT08A040, ASME, New York, NY, USA, 38th Mechanisms and Robotics Conference, Buffalo, NY, USA, 17/08/14. https://doi.org/10.1115/DETC2014-35054

Design of a compliant monolithic internally statically balanced four-bar mechanism. / Berntsen, L.; Gosenshuis, D.; Herder, Just.
Proceedings ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference: Volume 5A: 38th Mechanisms and Robotics Conference. Vol. 5A New York, NY, USA: ASME, 2014. V05AT08A040.

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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AU - Herder, Just

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PY - 2014

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N2 - nstigated by the need to statically balance compliant mechanisms, this paper presents a compliant internally static balanced monolithic four-bar linkage which can be used as generic building block in any compliant mechanism. The pivots of the four-bar are made compliant by the use of initially curved leaf springs. The balancing energy is provided by two pre-loaded opposing cantilever leaf springs that follow a circular path imposed by the input link in a range of forty degrees. The monolithic four-bar and its balancing mechanism are dimensioned by means of an analytical model (decoupled segments), optimized with a FE-analysis (coupled), and validated with a prototype and accompanying experiment. FEA shows a peak moment reduction of 95% (elastic material, working range: 40°), and the experiment of a lasercut 10 mm thick PMMA (visco-elastic material) prototype shows a peak moment reduction of 63% (working range: 36°) up to 88% (working range: 20°).

AB - nstigated by the need to statically balance compliant mechanisms, this paper presents a compliant internally static balanced monolithic four-bar linkage which can be used as generic building block in any compliant mechanism. The pivots of the four-bar are made compliant by the use of initially curved leaf springs. The balancing energy is provided by two pre-loaded opposing cantilever leaf springs that follow a circular path imposed by the input link in a range of forty degrees. The monolithic four-bar and its balancing mechanism are dimensioned by means of an analytical model (decoupled segments), optimized with a FE-analysis (coupled), and validated with a prototype and accompanying experiment. FEA shows a peak moment reduction of 95% (elastic material, working range: 40°), and the experiment of a lasercut 10 mm thick PMMA (visco-elastic material) prototype shows a peak moment reduction of 63% (working range: 36°) up to 88% (working range: 20°).

KW - design

KW - finite element analysis

KW - engineering prototypes

KW - springs

KW - compliant mechanisms

KW - blocks

KW - linkages

KW - cantilevers

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DO - 10.1115/DETC2014-35054

M3 - Conference contribution

SN - 978-0-7918-4636-0

VL - 5A

BT - Proceedings ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference

PB - ASME

CY - New York, NY, USA

T2 - 38th Mechanisms and Robotics Conference, Buffalo, NY, USA

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Berntsen L, Gosenshuis D, Herder J. Design of a compliant monolithic internally statically balanced four-bar mechanism. In Proceedings ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference: Volume 5A: 38th Mechanisms and Robotics Conference. Vol. 5A. New York, NY, USA: ASME. 2014. V05AT08A040 doi: 10.1115/DETC2014-35054

Design of a compliant monolithic internally statically balanced four-bar mechanism

Abstract

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Bibliographical note

Keywords

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Cite this