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Experiments on the thermal post-buckling of panels, including localized heating

Publication ,  Journal Article
Ehrhardt, DA; Virgin, LN
Published in: Journal of Sound and Vibration
January 20, 2019

The suppression of expansion in thin clamped panels subjected to elevated thermal loading often results in buckling. However, a number of possible post-buckled equilibrium configurations typically exist, and which shape ensues depends on a number of factors including the role of symmetry, boundary conditions, aspect ratio, and the effect of small geometric imperfections associated with the initial shape. It is possible to force the panel to go between different buckled shapes, given a sufficiently large perturbation. Sometimes the panel will spontaneously jump, or snap, when the temperature is gradually increased or decreased (mode jumping). The extent to which these features occur when the thermal loading is applied locally is also investigated. This paper describes some interesting nonlinear (essentially buckling) behavior in thermally-loaded panels from a primarily experimental perspective, with an additional focus on non-uniform heating. The full force of stereo 3D digital image correlation and forward-looking infrared cameras are exploited to provide a relatively complete picture of this behavior.

Duke Scholars

Published In

Journal of Sound and Vibration

DOI

EISSN

1095-8568

ISSN

0022-460X

Publication Date

January 20, 2019

Volume

439

Start / End Page

300 / 309

Related Subject Headings

  • Acoustics
  • 51 Physical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
 

Citation

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ICMJE
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Ehrhardt, D. A., & Virgin, L. N. (2019). Experiments on the thermal post-buckling of panels, including localized heating. Journal of Sound and Vibration, 439, 300–309. https://doi.org/10.1016/j.jsv.2018.08.043
Ehrhardt, D. A., and L. N. Virgin. “Experiments on the thermal post-buckling of panels, including localized heating.” Journal of Sound and Vibration 439 (January 20, 2019): 300–309. https://doi.org/10.1016/j.jsv.2018.08.043.
Ehrhardt DA, Virgin LN. Experiments on the thermal post-buckling of panels, including localized heating. Journal of Sound and Vibration. 2019 Jan 20;439:300–9.
Ehrhardt, D. A., and L. N. Virgin. “Experiments on the thermal post-buckling of panels, including localized heating.” Journal of Sound and Vibration, vol. 439, Jan. 2019, pp. 300–09. Scopus, doi:10.1016/j.jsv.2018.08.043.
Ehrhardt DA, Virgin LN. Experiments on the thermal post-buckling of panels, including localized heating. Journal of Sound and Vibration. 2019 Jan 20;439:300–309.
Journal cover image

Published In

Journal of Sound and Vibration

DOI

EISSN

1095-8568

ISSN

0022-460X

Publication Date

January 20, 2019

Volume

439

Start / End Page

300 / 309

Related Subject Headings

  • Acoustics
  • 51 Physical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences