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Experiments on probing the configuration space of post-buckled panels

Publication ,  Journal Article
Ehrhardt, D; Virgin, LN; Spottswood, SM
Published in: Journal of Applied Mechanics, Transactions ASME
December 1, 2020

This paper describes a primarily experimental study in which a nonlinear structural component (a slender, mechanically buckled panel) is subject to probing. That is, equilibrium configurations are explored when a specific location on the panel is subject to the application of a (variable) displacement constraint and characterized by a corresponding probe force. This probe force (in this study located at the center of the rectangular panels) is measured using a load cell and the resulting shape(s), taken up by the panel, measured using digital image correlation (DIC). Although the probe is only applied at a single location, this arrangement supplies considerable information about the changing equilibrium landscape including revealing co-existing equilibrium configurations using large perturbations and associated hysteresis phenomena. In addition, monitoring the probing force, and specifically when it drops to zero, provides a window into "free" equilibria that would otherwise be unstable and unobservable. Finally, it is shown that the probed equilibrium configurations provide the "landscape" within which any dynamically induced trajectories evolve including snap-through oscillations. copy; 2020 by ASME.

Duke Scholars

Published In

Journal of Applied Mechanics, Transactions ASME

DOI

EISSN

1528-9036

ISSN

0021-8936

Publication Date

December 1, 2020

Volume

87

Issue

12

Related Subject Headings

  • Mechanical Engineering & Transports
  • 4017 Mechanical engineering
  • 4005 Civil engineering
  • 4001 Aerospace engineering
  • 0913 Mechanical Engineering
  • 0905 Civil Engineering
  • 0901 Aerospace Engineering
 

Citation

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ICMJE
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Ehrhardt, D., Virgin, L. N., & Spottswood, S. M. (2020). Experiments on probing the configuration space of post-buckled panels. Journal of Applied Mechanics, Transactions ASME, 87(12). https://doi.org/10.1115/1.4048197
Ehrhardt, D., L. N. Virgin, and S. M. Spottswood. “Experiments on probing the configuration space of post-buckled panels.” Journal of Applied Mechanics, Transactions ASME 87, no. 12 (December 1, 2020). https://doi.org/10.1115/1.4048197.
Ehrhardt D, Virgin LN, Spottswood SM. Experiments on probing the configuration space of post-buckled panels. Journal of Applied Mechanics, Transactions ASME. 2020 Dec 1;87(12).
Ehrhardt, D., et al. “Experiments on probing the configuration space of post-buckled panels.” Journal of Applied Mechanics, Transactions ASME, vol. 87, no. 12, Dec. 2020. Scopus, doi:10.1115/1.4048197.
Ehrhardt D, Virgin LN, Spottswood SM. Experiments on probing the configuration space of post-buckled panels. Journal of Applied Mechanics, Transactions ASME. 2020 Dec 1;87(12).

Published In

Journal of Applied Mechanics, Transactions ASME

DOI

EISSN

1528-9036

ISSN

0021-8936

Publication Date

December 1, 2020

Volume

87

Issue

12

Related Subject Headings

  • Mechanical Engineering & Transports
  • 4017 Mechanical engineering
  • 4005 Civil engineering
  • 4001 Aerospace engineering
  • 0913 Mechanical Engineering
  • 0905 Civil Engineering
  • 0901 Aerospace Engineering