Force and hydraulic displacement amplification of fiber reinforced soft actuators

Joshua Bishop-Moser, Girish Krishnan, Sridhar Kota

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Soft robots allow for complex continuum motions and shapes that conform to their environment. Using a fiber-reinforced elastomeric enclosure (FREE) driven by fluid provides a high power density, soft continuum actuator. While the force generation for a small subset of this structure known as McKibben actuators has been studied extensively, the force and moments generated by a wider set of fiber reinforcements have not been previously investigated. Using virtual work and kinematics derived from fiber inextensibility and fluid incompressibility, the force and moments for the entire design space of FREEs has been determined analytically. Graphical representations have been created, providing easy tools for synthesis and analysis of force and moments in all possible FREEs. The hydraulic displacement amplification, or volumetric transduction, of output motion to fluid displacement has also been determined using kinematics; this transduction gives an indication of stiffness of the structure. Graphical representations have also been created, providing a designer with an intuitive understanding of the behavior all FREE topologies.

Original languageEnglish (US)
Title of host publication37th Mechanisms and Robotics Conference
PublisherAmerican Society of Mechanical Engineers
ISBN (Print)9780791855935
DOIs
StatePublished - Jan 1 2013
Externally publishedYes
EventASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2013 - Portland, OR, United States
Duration: Aug 4 2013Aug 7 2013

Publication series

NameProceedings of the ASME Design Engineering Technical Conference
Volume6 A

Other

OtherASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2013
CountryUnited States
CityPortland, OR
Period8/4/138/7/13

ASJC Scopus subject areas

  • Modeling and Simulation
  • Mechanical Engineering
  • Computer Science Applications
  • Computer Graphics and Computer-Aided Design

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  • Cite this

    Bishop-Moser, J., Krishnan, G., & Kota, S. (2013). Force and hydraulic displacement amplification of fiber reinforced soft actuators. In 37th Mechanisms and Robotics Conference [V06AT07A031] (Proceedings of the ASME Design Engineering Technical Conference; Vol. 6 A). American Society of Mechanical Engineers. https://doi.org/10.1115/DETC2013-12657