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Shear Buckling of Infinitely Long Simply Supported Metalite Type Sandwich Plates

Description: "A theoretical solution is obtained for the problem of the shear buckling of infinitely long simply supported elastic Metalite type sandwich plates. An approximate correction is suggested for the determination of the critical shear stresses of plates that buckle in the plastic range" (p. 1).
Date: July 1949
Creator: Seide, Paul
Partner: UNT Libraries Government Documents Department

The Effect of Longitudinal Stiffeners Located on One Side of a Plate on the Compressive Buckling Stress of the Plate-Stiffener Combination

Description: "The problem of buckling under uniform compression of flat, simply supported, rectangular plates equally spaced longitudinal stiffeners on one side of the plate is investigated. For the case of a plate with one, two, or infinitely many stiffeners, the analysis yields expressions for the effective moment of inertia of the stiffeners that can be used in conjunction with the buckling charts previously presented in NACA TN 1825" (p. 1).
Date: January 1953
Creator: Seide, Paul
Partner: UNT Libraries Government Documents Department

Compressive Buckling of Flat Rectangular Metalite Type Sandwich Plates With Simply Supported Loaded Edges and Clamped Unloaded Edges

Description: Note presenting a theoretical solution for the problem of the compressive buckling of flat rectangular Metalite type sandwich plates with simply supported loaded edges and clamped unloaded edges. The solution is based on the general small-deflection theory for flat sandwich plates developed in a previous report. Results regarding stability orientation and buckling curves, comparison with approximate solution, correction for plasticity, and comparison of theory and experiment are provided.
Date: May 1949
Creator: Seide, Paul
Partner: UNT Libraries Government Documents Department

Compressive Buckling of Flat Rectangular Metalite Type Sandwich Plates With Simply Supported Loaded Edges and Clamped Unloaded Edges (Revised)

Description: Note presenting a theoretical solution obtained for the problem of the compressive buckling of flat rectangular Metalite type sandwich plates with simply supported loaded edges and clamped unloaded edges. The solution is based on the general small-deflection theory for flat sandwich plates developed in a previous NACA report. Results regarding the stability criterion and buckling curves, correction for plasticity, and a comparison with theoretical results are provided.
Date: February 1952
Creator: Seide, Paul
Partner: UNT Libraries Government Documents Department

Derivation of Stability Criterions for Box Beams With Longitudinally Stiffened Covers Connected by Posts

Description: "An investigation has been made of the elastic stability of an idealized box beam with longitudinally stiffened covers connected by posts and subjected to end moments and axial loads. Stability criterions which give the axial stiffness of the posts required to achieve desired stress values in the box-beam covers are derived" (p. 1).
Date: August 1952
Creator: Seide, Paul
Partner: UNT Libraries Government Documents Department

The Stability Under Longitudinal Compression of Flat Symmetric Corrugated-Core Sandwich Plates With Simply Supported Loaded Edges and Simply Supported or Clamped Unloaded Edges

Description: "A theory for the elastic behavior of orthotropic sandwich plates is used to determine the compressive-buckling-load parameters of flat systemic corrugated-core-sandwich plates with simply supported loaded edges and simply supported or clamped unloaded edges. Charts are presented for corrugated-core sandwich plates for which the transverse shear stiffness in planes parallel to the axis of the corrugations may be assumed infinite. The limits of validity of this assumption are investigated for simply supported plates" (p. 1).
Date: April 1952
Creator: Seide, Paul
Partner: UNT Libraries Government Documents Department

Minimum-Weight Design of Simply Supported Transversely Stiffened Plates Under Compression

Description: Note presenting an investigation of the weight of a simply supported transversely stiffened compression panel subjected to a given buckling load as a function of the stiffener spacing, plate thickness, and the geometry of the stiffener cross section. Results indicate that there are particular combinations of stiffener spacing and plate thickness, dependent on the geometrical properties of the stiffener cross section, for which the panel weight is a minimum.
Date: September 1948
Creator: Gomza, Alexander & Seide, Paul
Partner: UNT Libraries Government Documents Department

Elastic and plastic buckling of simply supported solid-core sandwich plates in compression

Description: From Summary: "A solution is presented for the problem of the compressive buckling of simply supported, flat, rectangular, solid-core sandwich plates stressed either in the elastic range or in the plastic range. Charts for the analysis of long sandwich plates are presented for plates having face materials of 24S-T3 aluminum alloy, 76S-T6 Alclad aluminum alloy, and stainless steel. A comparison of computed and experimental buckling stresses of square solid-core sandwich plates indicates fair agreement between theory and experiment."
Date: 1950
Creator: Seide, Paul & Stowell, Elbridge Z.
Partner: UNT Libraries Government Documents Department

Elastic and plastic buckling of simply supported metalite type sandwich plates in compression

Description: Report presenting a solution for the problem of the compressive buckling of simply supported, flat, rectangular, Metalite type sandwich plates stressed either in the elastic or plastic range. Charts for the analysis of long sandwich plates are provided for plates with face materials of 24S-T3 aluminum alloy, 75S-T6 Alclad aluminum alloy, and stainless steel.
Date: February 1949
Creator: Seide, Paul & Stowell, Elbridge Z.
Partner: UNT Libraries Government Documents Department

The Buckling of Parallel Simply Supported Tension and Compression Members Connected by Elastic Deflectional Springs

Description: Note presenting an investigation of the problem of the buckling of parallel simply supported tension and compression members connected by equally stiff and equally spaced elastic deflection springs as an approximation to the problem of the effect of finite stiffness of ribs and tension surface on the buckling load of the compression surface of a wing. Charts relating compressive buckling load, deflectional spring stiffness, and the ratio of the flexural stiffness of the members are given for tension and compression members with various numbers of spans.
Date: February 1949
Creator: Seide, Paul & Eppler, John F.
Partner: UNT Libraries Government Documents Department

An Experimental Determination of the Critical Bending Moment of a Box Beam Stiffened by Posts

Description: "An experimental determination of the critical bending moment of a box beam stiffened by posts is described and discussed. The experimental buckling load is in good agreement with that given by theory. Since appreciable distortion of the beam cross section occurred before the buckling load was reached, modification of post construction by the use of several ribs may be necessary for maintenance of the rectangular shape of the cross section" (p. 1).
Date: July 1951
Creator: Barrett, Paul F. & Seide, Paul
Partner: UNT Libraries Government Documents Department

The Stability of the Compression Cover of Box Beams Stiffened by Posts

Description: Note presenting an investigation of the buckling of the compression cover of post-stiffened box beams subjected to end moments. Charts are presented for the determination of the minimum post axial stiffness and the corresponding compressive buckling loads required for the compression cover to buckle with nodes through the posts. Information regarding the limitations on use of curves in analysis and the application to analysis and design are provided.
Date: August 1950
Creator: Seide, Paul & Barrett, Paul F.
Partner: UNT Libraries Government Documents Department

The Stability of the Compression Cover of Box Beams Stiffened by Posts

Description: "An investigation is made of the buckling of the compression cover of post-stiffened box beams subjected to end moments. Charts are presented for the determination of the minimum post axial stiffnesses and the corresponding compressive buckling loads required for the compression cover to buckle with nodes through the posts. Application of the charts to design and analysis and the limitations of their use are discussed" (p. 1087).
Date: May 10, 1950
Creator: Seide, Paul & Barrett, Paul F.
Partner: UNT Libraries Government Documents Department

Thermal buckling of plates

Description: "An approximate method, based on large-deflection plate theory, for calculating the deflections of flat or initially imperfect plate subject to thermal buckling is outlined. The method is used to determine the deflections of a simply supported panel subjected to a tentlike temperature distribution over the plate surface. Experimental results for a particular panel are in good agreement with the theoretical results for the range of temperatures and deflections considered in the test" (p. 1).
Date: August 1952
Creator: Gossard, Myron L.; Seide, Paul & Roberts, William M.
Partner: UNT Libraries Government Documents Department

The buckling of a column on equally spaced deflectional and rotational springs

Description: A solution is presented for the problem of the buckling of a column on equally spaced deflectional and rotational springs. Useful charts, which relate deflectional spring stiffness, rotational spring stiffness, and buckling load, are given for columns having two, three, four, and infinite number of spans.
Date: March 1948
Creator: Budiansky, Bernard; Seide, Paul & Weinberger, Robert A.
Partner: UNT Libraries Government Documents Department

Relative Structural Efficiencies of Flat Balsa-Core Sandwich and Stiffened-Panel Construction

Description: "An analysis is made and charts are presented for the determination of regions of efficient application of flat balsa-core sandwich and stiffened-panel construction for a large range of design requirements. Optimum sandwiches are found to have relatively low values of the ratio of core thickness to face thickness" (p. 1).
Date: October 1951
Creator: Hubka, Ralph E.; Dow, Norris F. & Seide, Paul
Partner: UNT Libraries Government Documents Department