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The inward bulge type buckling of monocoque cylinders 3: revised theory which considers the shear strain energy
Report presenting the third part of an investigation dealing with the inward bulge type buckling of monocoque cylinders the theory of buckling in pure bending, which is refined through the consideration of the shear strain energy stored in the sheet covering, the assumption of a revised deflected shape of the rings, and the use of summations in place of some of the integrations of the preceding report.
Date:
April 1945
Creator:
Hoff, N. J. & Klein, Bertram
System:
The UNT Digital Library
Numerical procedures for the calculation of the stresses in monocoques 3: calculation of the bending moments in fuselage frames
"This report deals with the calculation of the bending moments in and the distortions of fuselage rings upon which known concentrated and distributed loads are acting. In the procedure suggested, the ring is divided into a number of beams each having a constant radius of curvature. The forces and moments caused in the end sections of the beams by individual unit displacements of the end sections are listed in a table designated as the operations table in conformity with Southwell's nomenclature. The operations table and the external loads are equivalent to a set of linear equations" (p. 1).
Date:
April 1946
Creator:
Hoff, N. J.; Libby, Paul A. & Klein, Bertram
System:
The UNT Digital Library
Numerical procedures for the calculation of the stresses in monocoques 4: influence coefficients of curved bars for distortions in their own plane
"Formulas for the calculation of influence coefficients of curved beams of constant radius of curvature are presented corresponding to displacements in the plane of curvature. Moreover, numerical values are given in tabular and graphic form for a limited number of values of the parameter involved" (p. 1).
Date:
April 1946
Creator:
Hoff, N. J.; Klein, Bertram & Libby, Paul A.
System:
The UNT Digital Library
Effect of Aging Aircraft Structures on Magnesium Parts
Note presenting an analysis of a procedure for artificially aging assemblies and subassemblies to improve the strength properties of the wrought aluminum alloys comprising their principal structure. Information is given on the magnesium alloys which may be present. The forms in which magnesium alloys may be encountered are casings, extrusions, forgings, and sheet.
Date:
April 1945
Creator:
Winston, A. W.
System:
The UNT Digital Library
Velocity Distribution on Wing Sections of Arbitrary Shape in Compressible Potential Flow 1: Circulatory Flows Obeying the Simplified Density-Speed Relation
"As a first step toward the computation of the velocity distribution along a wing profile of arbitrary shape in a compressible fluid, the circulation-free flow around a symmetrical profile is treated under the assumption of the simplified density-speed relation due to Tchaplygin, Karman, and Tsien. The velocity distribution problem is reduced to a non-linear integral equation which is solved by a fairly rapidly convergent iteration method. Numerical examples are given" (p. 1).
Date:
April 1946
Creator:
Bers, Lipman
System:
The UNT Digital Library