• Open Access

Shape Control for Experimental Continuation

Robin M. Neville, Rainer M. J. Groh, Alberto Pirrera, and Mark Schenk
Phys. Rev. Lett. 120, 254101 – Published 21 June 2018
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Abstract

An experimental method has been developed to locate unstable equilibria of nonlinear structures quasistatically. The technique involves loading a structure by the application of either a force or a displacement at a main actuation point while simultaneously controlling the overall shape using additional bidirectional probe points. The method is applied to a shallow arch, and unstable segments of its equilibrium path are identified experimentally for the first time. Shape control is a fundamental building block for the experimental—as opposed to numerical—continuation of nonlinear structures, which will significantly expand our ability to measure their mechanical response.

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  • Received 5 March 2018
  • Revised 20 April 2018

DOI:https://doi.org/10.1103/PhysRevLett.120.254101

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Nonlinear DynamicsPolymers & Soft Matter

Authors & Affiliations

Robin M. Neville, Rainer M. J. Groh, Alberto Pirrera*, and Mark Schenk

  • Bristol Composites Institute (ACCIS), Department of Aerospace Engineering, University of Bristol, Bristol BS8 1TR, United Kingdom

  • *alberto.pirrera@bristol.ac.uk

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Issue

Vol. 120, Iss. 25 — 22 June 2018

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