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    facet.materialart.
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    The torsional stiffness of thin duralumin shells subjected to large torques (1934)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: This report gives a simple method of estimating the torsional stiffness of thin shells, such as box beams or stressed-skin wings under large torque loads. A general efficiency chart for shells in torsion is established, based on the assumption that the efficiency of the web sheet in resisting deformation decreases linearly with the average stress. The chart is used to calculate the torsional deflections of eight box beams, a test wing panel, and a complete wing; the results of the calculations are shown in comparison with the test results. The agreement is probably as good as might be expected considering the empirical nature of the method and the well-known dispersion between results of tests on thin sheet-metal structures.
    Type: NACA-TN-500
    Format: application/pdf
    Location Call Number Expected Availability
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