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

L. Berntsen, D. Gosenshuis, Just Herder

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

1 Citation (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 languageEnglish
Title of host publicationProceedings ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
Subtitle of host publicationVolume 5A: 38th Mechanisms and Robotics Conference
Place of PublicationNew York, NY, USA
PublisherASME
Number of pages13
Volume5A
ISBN (Print)978-0-7918-4636-0
DOIs
Publication statusPublished - 2014
Event38th Mechanisms and Robotics Conference, Buffalo, NY, USA - New York, NY, USA
Duration: 17 Aug 201420 Aug 2014

Conference

Conference38th Mechanisms and Robotics Conference, Buffalo, NY, USA
Period17/08/1420/08/14

Keywords

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

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  • 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). [ V05AT08A040] ASME. https://doi.org/10.1115/DETC2014-35054