Comparison of three methods for calculating the compressive strength of flat and slightly curved sheet and stiffener combinations

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Description

This report gives a comparison of the accuracy of the three methods for calculating the compressive strength of flat sheet and stiffener combinations such as occur in stressed-skin or monocoque structures for aircraft. Of the three methods based upon various assumptions with regard to the interaction of sheet and stiffener, the method based upon mutual action of the stiffener and an effective width as a column gave the best agreement with the results of the tests. An investigation of the effect of small curvature resulted in the conclusion that the compressive strength of the curved panels is, for all practical ... continued below

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Lundquist, Eugene E. March 1, 1933.

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This report is part of the collection entitled: National Advisory Committee for Aeronautics Collection and one other and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 38 times . More information about this report can be viewed below.

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  • Main Title: Comparison of three methods for calculating the compressive strength of flat and slightly curved sheet and stiffener combinations
  • Series Title: NACA Technical Notes

Description

This report gives a comparison of the accuracy of the three methods for calculating the compressive strength of flat sheet and stiffener combinations such as occur in stressed-skin or monocoque structures for aircraft. Of the three methods based upon various assumptions with regard to the interaction of sheet and stiffener, the method based upon mutual action of the stiffener and an effective width as a column gave the best agreement with the results of the tests. An investigation of the effect of small curvature resulted in the conclusion that the compressive strength of the curved panels is, for all practical purposes, equal to the strength of flat panels except for thick sheet where non-uniform curvature throughout the length may cause the strength of the curved panel to be 10 to 15 percent less than that of a corresponding flat panel.

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  • : 93R10585
  • URL: http://hdl.handle.net/2060/19930081295 External Link
  • Report No.: NACA-TN-455
  • Center for AeroSpace Information Number: 19930081295
  • Archival Resource Key: ark:/67531/metadc54181

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National Advisory Committee for Aeronautics Collection

The National Advisory Committee for Aeronautics (NACA) was a U.S. federal agency founded on March 3, 1915 to undertake, promote, and institutionalize aeronautical research. On October 1, 1958 the agency was dissolved, and its assets and personnel transferred to the newly created National Aeronautics and Space Administration (NASA).

Technical Report Archive and Image Library

This selection of materials from the Technical Report Archive and Image Library (TRAIL) includes hard-to-find reports published by various government agencies. The technical publications contain reports, images, and technical descriptions of research performed for U.S. government agencies. Topics range from mining, desalination, and radiation to broader physics, biology, and chemistry studies. Some reports include maps, foldouts, blueprints, and other oversize materials.

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  • March 1, 1933

Added to The UNT Digital Library

  • Nov. 14, 2011, 7:18 p.m.

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  • Feb. 7, 2017, 1:57 p.m.

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Lundquist, Eugene E. Comparison of three methods for calculating the compressive strength of flat and slightly curved sheet and stiffener combinations, report, March 1, 1933; (digital.library.unt.edu/ark:/67531/metadc54181/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.