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The Influence of the Form of a Wooden Beam on Its Stiffness and Strength 1: Deflection of Beams With Special Reference to Shear Deformations

Description: The purpose of this investigation was to determine to what extent ordinary deflection formulas, which neglect shear deformations, are in error when applied to beams of various sections, and to develop reasonably accurate yet comparatively simple formulas which take into account such deformations. A great many tests were made to determine the amount of shear deformation for beams of various sections tested over many different spans. As the span over which the beam is tested is increased the erro… more
Date: 1924
Creator: Newlin, J. A. & Trayer, G. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Bending of Beams of Thin Sections

Description: The tendency toward economy of material and lightness of structure has long since led to the increased application of beams having large ratios of moment of area W to cross-sectional area F. This paper tries to provide an answer to how thin the beams can be.
Date: April 1936
Creator: Huber, Maximilian T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Combined Beam-Column Stresses of Aluminum-Alloy Channel Sections

Description: The results of a research program to obtain design data on the strength of open-channel aluminum-alloy sections subjected to combined column and beam action. The results of the tests of about 70 specimens were graphed for stresses due to axial load and stresses due to bending loading as functions of length to radius of gyration of the specimens. From these graphs a design chart was derived that is suitable for ready use.
Date: September 1939
Creator: Gottlieb, R.; Thompson, T. M. & Witt, E. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Combined Beam-Column Stresses of Aluminum-Alloy Channel Sections

Description: "The results of tests of 65 specimens of aluminum-alloy channel sections are graphed for stresses due to axial and bending loads as functions of the ratio of length of specimen to its radius of gyration, and from these data a suggested design chart is derived that is suitable for ready use" (p. 1).
Date: September 1941
Creator: Hutton, J. O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

84th Inf. Div. Special Service presents the Railsplitters Revue "On the Beam" : all soldier stage show featuring "The Ballet Moose". . ..

Description: A flyer for a musical revue given by and/or for soldiers at the T.S.C.W. (Texas State College for Women, Denton, Texas?) in 1943. There are no images, only text in various blue and red tones.
Date: 1943
Creator: United States. Army Service Forces. Special Service Division.
Item Type: Refine your search to only Poster
Partner: UNT Libraries Government Documents Department
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Effect of Length-Beam Ration on Resistance and Spray of Three Models of Flying-Boat Hulls

Description: Report presenting an investigation of the effect of changes in the length-beam ratio of flying-boat hulls on resistance and spray. A family of three models of hulls of different length-beam ratios was used and, in order to maintain comparable hull sizes, the plan-form areas of the hulls were made approximately equal by keeping equal products of length and beam. Results regarding resistance, spray, and take-off performance are provided.
Date: October 1943
Creator: Bell, Joe W.; Garrison, Charlie C. & Zeck, Howard
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Design criterions for the dimensions of the forebody of a long-range flying boat

Description: Report presenting a correlation of the gross-load coefficient and the forebody length-beam ratio for a limited number of present-day multiengine long-range flying boats for which the spray characteristics are known. Results indicate that the gross-load coefficient for comparable spray characteristics varies as the square of the forebody length-beam ratio.
Date: November 1943
Creator: Parkinson, John B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Resistance of Three Series of Flying Boat-Hulls as Affected by Length-Beam Ratio

Description: Report presents correlation of data obtained from several independent length-beam-ratio investigations to determine the general effect of length-beam ratio on the resistance characteristics of three series of flying-boat hulls. An optimum length-beam ratio was found beyond which no further reduction in hydrodynamic resistance occurred. The optimum ratio depended on the hull lines of any given mode series.
Date: October 1945
Creator: Land, Norman S.; Bidwell, Jerold M. & Goldenbaum, David M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of Length-Beam on the Aerodynamic Characteristics of Flying-Boat Hulls

Description: Report presenting a wind-tunnel investigation to determine the effect of length-beam ratio on the aerodynamic characteristics of a family of flying-boat hulls in the presence of a wing. The hulls were designed to have approximately the same hydrodynamic performance with respect to spray and resistance characteristics. Results regarding the two-dimensional and three-dimensional mounting setups, drag reduction, and aerodynamic refinement effects are provided.
Date: June 1947
Creator: Yates, Campbell C. & Riebe, John M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of Length-Beam Ratio on the Aerodynamic Characteristics of Flying-Boat Hulls without Wing Interference

Description: Contains experimental results of an investigation of the aerodynamic characteristics of a family of flying boat hulls of length beam ratios 6, 9, 12, and 15 without wing interference. The results are compared with those taken on the same family of hulls in the presence of a wing.
Date: January 16, 1948
Creator: Lowry, John G. & Riebe, John M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Strength of thin-web beams with transverse load applied at an intermediate upright

Description: "Results are presented of tests of several 24S-T aluminum-alloy thin-web beams with transverse load applied at the end of an intermediate upright. A method of computing stresses and predicting failures in these directly loaded uprights is presented. A comparison between the experimental and calculated results is given" (p. 1).
Date: February 1948
Creator: Levin, L. Ross
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Spray Characteristics of Four Flying-Boat Hulls as Affected by Length-Beam Ratio

Description: Report presenting an investigation of the spray characteristics in smooth water of four related models with varying length-beam ratios and constant values of length squared-beam product in Langley tank no. 1. Similar propeller and flap spray characteristics were found over the range of ratios, but higher length-beam ratios may require greater clearance between elevators and water.
Date: October 1948
Creator: Hodges, William W. & Woodward, David R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Aerodynamic Characteristics of Flying-Boat Hulls Having Length-Beam Ratios of 20 and 30

Description: Report discussing the aerodynamic effects of length-beam ratios 20 and 30 as compared to length-beam ratios from 6 to 15. There was slightly more longitudinal stability and slightly less directional stability than in the lower ratios and not much change in the minimum drag coefficient.
Date: November 10, 1948
Creator: Riebe, John M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Matrix Methods for Calculating Cantilever-Beam Deflections

Description: Note presenting the method of numerical integration for calculation of beam deflection in matrix form to give it the advantages which are inherent in an influence-coefficient method. Examples are presented to show that the use of weighted matrices reduces the calculation time required to obtain a desired degree of accuracy.
Date: March 1949
Creator: Benscoter, Stanley U. & Gossard, Myron L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Strength analysis of stiffened thick beam webs

Description: Report presenting a method for the strength analysis of stiffened beam webs as applied to beams with ratios of applied shear to buckling shear less than 2.5. Results regarding critical shear stress, forced crippling failure in uprights, and web failures are provided.
Date: March 1949
Creator: Levin, L. Ross & Sandlin, Charles W., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of an Increase in Hull Length-Beam Ratio From 15 to 20 on the Hydrodynamic Characteristics of Flying Boats

Description: Report presenting an investigation of the effect of hull length-beam ratio on the hydrodynamic characteristics of flying boats that extend to a length-beam ratio of 20. The results are compared with flying boats having a length-beam ratio of 15. Results regarding longitudinal stability, spray characteristics, take-off performance, taxiing and take-off behavior in waves, landing behavior in waves, and a summary chart are provided.
Date: August 24, 1949
Creator: Carter, Arthur W. & Whitaker, Walter E., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Water-Landing Investigation of a Model Having Heavy Beam Loadings and 0 Degrees Angle of Dead Rise

Description: Report presenting testing of a model with heavy beam loadings and an angle of dead rise of 0 degrees subjected to smooth-water impacts at a range of fixed trims and flight-path angles. Results regarding the time histories of horizontal and vertical displacements, vertical velocity, vertical acceleration, and pitching moment are provided.
Date: April 1951
Creator: McArver, A. Ethelda
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Considerations on the Effect of Beam-Dee Coupling in a Cyclotron RF System

Description: Analysis of the problem of accelerating ions in a Thomas cyclotron has been confined almost entirely to the integration of various equations of motion (for single particles) for which a complete field description is necessary. In contrast, the problem of principal interest to rf system engineers concerns the gross transfer of electrical energy from an rf generator into an accelerated beam.
Date: July 14, 1952
Creator: Wouters, L. F. (Louis Francis), 1921-
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Introduction to Electrical-Circuit Analogies for Beam Analysis

Description: Note presenting an application of the well-known analogy between electrical and mechanical systems to the calculation of stresses and deflections of beams. The main objective of the paper is to give an explanation of the analogies in a basic manner which will enable a structural engineer to understand the process of designing the electrical circuits. Analogies are given for beams in bending and torsion with static loads and in vibrational motion.
Date: September 1952
Creator: Benscoter, Stanley U. & MacNeal, Richard H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

On Traveling Waves in Beams

Description: "The basic equations of Timoshenko for the motion of vibrating nonuniform beams, which allow for effects of transverse shear deformation and rotary inertia, are presented in several forms, including one in which the equations are written in the directions of the characteristics. The propagation of discontinuities in moment and shear, as governed by these equations, is discussed. Numerical traveling-wave solutions are obtained for some elementary problems of finite uniform beams for which the pr… more
Date: October 28, 1952
Creator: Leonard, Robert W. & Budiansky, Bernard
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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