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A Constitutive Model for Torsional Loads on Fluid-Driven Soft Robots

[+] Author Affiliations
Audrey Sedal, Daniel Bruder, Joshua Bishop-Moser, Ram Vasudevan, Sridhar Kota

University of Michigan, Ann Arbor, MI

Paper No. DETC2017-67970, pp. V05AT08A016; 7 pages
  • ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 5A: 41st Mechanisms and Robotics Conference
  • Cleveland, Ohio, USA, August 6–9, 2017
  • Conference Sponsors: Design Engineering Division, Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5817-2
  • Copyright © 2017 by ASME


For soft robots to be utilized in medical devices, locomotion, industrial automation, and a number of other fields, they require accurate and computationally efficient models that capture both the kinetic behavior and inherent non-linearity. Fiber reinforcement enables soft robots to create useful motions, such as rotation, but poses additional complexity in modeling. The purpose of this paper is to present a constitutive model that relates the kinematic behaviour of a pneumatic fiber-reinforced soft actuator with its torsional loading. This model has the advantage of requiring minimal experimental parameter determination, being inclusive of torsional loads, without requiring large-scale computing systems. Experimental data in multiple kinematic configurations shows agreement between the models moment prediction and the moments that the actuators generate.

Copyright © 2017 by ASME



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