Author: Pai C. Hu
Publisher:
ISBN:
Category : Buckling (Mechanics)
Languages : en
Pages : 544
Book Description
(3) The Southwell plot method of predicting theoretical critical stresses for perfect specimens from experimental observations on actual specimens may not be expected to give, in general, satisfactory results when applied to flat plates.
Effect of Small Deviations from Flatness on Effective Width and Buckling of Plates in Compression
Author: Pai C. Hu
Publisher:
ISBN:
Category : Buckling (Mechanics)
Languages : en
Pages : 544
Book Description
(3) The Southwell plot method of predicting theoretical critical stresses for perfect specimens from experimental observations on actual specimens may not be expected to give, in general, satisfactory results when applied to flat plates.
Publisher:
ISBN:
Category : Buckling (Mechanics)
Languages : en
Pages : 544
Book Description
(3) The Southwell plot method of predicting theoretical critical stresses for perfect specimens from experimental observations on actual specimens may not be expected to give, in general, satisfactory results when applied to flat plates.
Technical Note - National Advisory Committee for Aeronautics
Author: United States. National Advisory Committee for Aeronautics
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1274
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1274
Book Description
Diagonal Tension in Curved Webs
Author: Paul Kuhn
Publisher:
ISBN:
Category : Curvature
Languages : en
Pages : 542
Book Description
The engineering theory of incomplete diagonal tension in plane webs presented in NACA TN No. 1364 is generalizd in order to make it applicable to curved webs. Comparisons are given between calculated and experimental results for a number of stiffened cylinders subjected to torsional loads. The results indicate that the theory predicts the stresses to about the same accuracy for curved webs as for plane webs. The failing stresses in the stringers in curved webs were predicted conservatively in all cases.
Publisher:
ISBN:
Category : Curvature
Languages : en
Pages : 542
Book Description
The engineering theory of incomplete diagonal tension in plane webs presented in NACA TN No. 1364 is generalizd in order to make it applicable to curved webs. Comparisons are given between calculated and experimental results for a number of stiffened cylinders subjected to torsional loads. The results indicate that the theory predicts the stresses to about the same accuracy for curved webs as for plane webs. The failing stresses in the stringers in curved webs were predicted conservatively in all cases.
Accelerations and Passenger Harness Loads Measured in Full-scale Light-airplane Crashes
Author: A. Martin Eiband
Publisher:
ISBN:
Category : Acceleration (Mechanics)
Languages : en
Pages : 652
Book Description
Full-scale light-airplane crashes simulating stall-spin accidents were conducted to determine the decelerations to which occupants are exposed and the resulting harness forces encountered in this type of accident. Crashes at impact speeds from 42 to 60 miles per hour were studied. The airplanes used were of the familiar steel-tube, fabric-covered, tandem, two-seat type.
Publisher:
ISBN:
Category : Acceleration (Mechanics)
Languages : en
Pages : 652
Book Description
Full-scale light-airplane crashes simulating stall-spin accidents were conducted to determine the decelerations to which occupants are exposed and the resulting harness forces encountered in this type of accident. Crashes at impact speeds from 42 to 60 miles per hour were studied. The airplanes used were of the familiar steel-tube, fabric-covered, tandem, two-seat type.
Experimental Investigation of Velocity Distributions Downstream of Single Duct Bends
Author: John R. Weske
Publisher:
ISBN:
Category : Air ducts
Languages : en
Pages : 544
Book Description
Results indicate that cross-sectional shape and aspect ratio are minor factors compared with radius ratio in affecting the velocity pattern. Variation of Reynolds number within the range of the tests had no appreciable effect on the velocity distribution in curved ducts.
Publisher:
ISBN:
Category : Air ducts
Languages : en
Pages : 544
Book Description
Results indicate that cross-sectional shape and aspect ratio are minor factors compared with radius ratio in affecting the velocity pattern. Variation of Reynolds number within the range of the tests had no appreciable effect on the velocity distribution in curved ducts.
The Theory of Diffusion in Strained Systems
Author: Louis A. Girifalco
Publisher:
ISBN:
Category : Crystals
Languages : en
Pages : 1082
Book Description
A general theory of solid-state diffusion in strained systems is developed on a molecular-kinetic basis. The theory predicts that for simple strains the diffusion coefficient is an exponential function of the lattice parameter and that the rate of change of the diffusion coefficient with strain is linearly related to the interatomic forces. It has also been shown that for plastic flow the diffusion coefficient is a linear function of strain rate. All the conclusions are confirmed by the data available in the literature.
Publisher:
ISBN:
Category : Crystals
Languages : en
Pages : 1082
Book Description
A general theory of solid-state diffusion in strained systems is developed on a molecular-kinetic basis. The theory predicts that for simple strains the diffusion coefficient is an exponential function of the lattice parameter and that the rate of change of the diffusion coefficient with strain is linearly related to the interatomic forces. It has also been shown that for plastic flow the diffusion coefficient is a linear function of strain rate. All the conclusions are confirmed by the data available in the literature.
NASA Technical Note
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 578
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 578
Book Description
NASA Technical Report
Author:
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 40
Book Description
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 40
Book Description
Technical Note
Author: United States. National Advisory Committee for Aeronautics
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 446
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 446
Book Description
The 1350 Degree Stress-rupture Properties of Two Wrought Alloys and Three Cast Alloys
Author: E. E. Reynolds
Publisher:
ISBN:
Category : Alloys
Languages : en
Pages : 510
Book Description
The rupture-test characteristics at 1350 degrees F of two wrought alloys in the solution-treated and aged condition, NR-82 (6059 modified-low carbon) and NR-84 (N-155 modified-low carbon), and three precision-cast alloys in aged condition, NR-71 (X-40), NR-87 (Co-Cr-Ni base-9Mo) and NR-90 (Co-Cr-Ni base-5Mo, 5W) are reported. The properties are shown to compare favorably with those of the strongeest similar alloys previously investigated. A correlation of NACA and OSRD data is presented, showing the variation of ruture strengths with temperature for the alloys between 1350 degrees and 2000 degrees F.
Publisher:
ISBN:
Category : Alloys
Languages : en
Pages : 510
Book Description
The rupture-test characteristics at 1350 degrees F of two wrought alloys in the solution-treated and aged condition, NR-82 (6059 modified-low carbon) and NR-84 (N-155 modified-low carbon), and three precision-cast alloys in aged condition, NR-71 (X-40), NR-87 (Co-Cr-Ni base-9Mo) and NR-90 (Co-Cr-Ni base-5Mo, 5W) are reported. The properties are shown to compare favorably with those of the strongeest similar alloys previously investigated. A correlation of NACA and OSRD data is presented, showing the variation of ruture strengths with temperature for the alloys between 1350 degrees and 2000 degrees F.