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A Pseudo-Rigid-Body Model for Rolling-Contact Compliant Beams

[+] Author Affiliations
Allen B. Mackay, Spencer P. Magleby, Larry L. Howell

Brigham Young University, Provo, UT

Paper No. DETC2007-35536, pp. 171-178; 8 pages
  • ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 8: 31st Mechanisms and Robotics Conference, Parts A and B
  • Las Vegas, Nevada, USA, September 4–7, 2007
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 0-7918-4809-4 | eISBN: 0-7918-3806-4
  • Copyright © 2007 by ASME


This paper presents a pseudo-rigid-body model (PRBM) for rolling-contact compliant beams (RCCBs). The loading conditions and boundary conditions for the RCCB can be simplified to an equivalent cantilever beam that has the same force-deflection characteristics as the RCCB. Building on the PRBM for cantilever beams, this paper defines a model for the force-deflection relationship for RCCBs. The definition of the RCCB PRBM includes the pseudo-rigid-body model parameters that determine the shape of the beam, the length of the corresponding pseudo-rigid-body links and the stiffness of the equivalent torsional spring. The behavior of the RCCB is parameterized in terms of a single parameter defined as clearance, or the distance between the contact surfaces. RCCBs exhibit a unique force-displacement curve where the force is inversely proportional to the clearance squared.

Copyright © 2007 by ASME
Topics: Rolling contact



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