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Experimental study of the deflections of curved plates exposed to pulsating cross-flows

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Abstract

The deflection of thin, elastic plates with different curvatures is experimentally investigated under pulsatile cross-flow conditions. Average and maximum deflections are reported in terms of the plate’s curvature, flow frequency, and stroke fraction. The laboratory results indicate that the maximum deflections can be reduced significantly when the curvature is increased (around 50 % for low-to-intermediate curvatures and up to 80 % for high curvatures). Moreover, the comparative analysis shows that the deflection is inversely proportional to the rigidity of the plates, which depends nonlinearly on the curvature. Based on the observed behavior, a simplified Euler–Bernoulli beam model is derived to qualitatively explain the effects of geometrical factors such as the curvature, the thickness, and the length of the plates. Some traits of the flow evolving around the plate and the need to have accurate measurements of the pressure are discussed.

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Authors and Affiliations

  1. Instituto de Ingeniería, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510, Coyoacán, D.F., Mexico

    J. E. V. Guzmán & R. Zenit

  2. Pemex Refinación, Av. Marina Nacional 329, Col. Verónica Anzures, 11311, Mexico, D.F., Mexico

    C. Hernández-Badillo

Authors
  1. J. E. V. Guzmán
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  2. C. Hernández-Badillo
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  3. R. Zenit
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Correspondence to J. E. V. Guzmán.

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Guzmán, J.E.V., Hernández-Badillo, C. & Zenit, R. Experimental study of the deflections of curved plates exposed to pulsating cross-flows. Acta Mech 227, 3621–3637 (2016). https://doi.org/10.1007/s00707-016-1687-1

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  • DOI: https://doi.org/10.1007/s00707-016-1687-1

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