Results 131 to 140 of about 372 (174)

Hyperbolic- and Elliptic-Paraboloid Roofs

2013
In the previous chapters, we have discussed cylindrical shells, which are special cases of doubly curved shells. We now proceed to more general cases of such shells, the elliptic paraboloid shell and the hyperbolic paraboloid shell. Structural engineers refer to the first category as elpar and to the second one as hyppar.
Johan Blaauwendraad, Jeroen H. Hoefakker
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Buckling of compound hyperbolic paraboloidal shells

Thin-Walled Structures, 1992
Abstract This paper presents the first elastic buckling analysis of a compound hyperbolic paraboloidal (hypar) shell under a uniformly distributed load. The compound shell is composed of four hypar panels of rectangular ground plan. A special feature of this analysis is the use of the pulse function to deal with the curvature discontinuities at the ...
null Jian-Fei Chen, null Zheng-An Xu
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Model Studies of a Concrete Hyperbolic Paraboloid

Journal of the Structural Division, 1962
Test results on uniform, unsymmetrical, and concentrated loads; graphical presentation of stresses and deflection tendencies for diaphragm to edge beam action, vertical and horizontal actions of edge beams, and actions of main convex and concave parabolas; large bending stresses in edge beams, in shell, and between shell and edge beams were observed ...
Allen G. Thuramn, George J. Herman
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Design of Hyperbolic Paraboloid Shells

1992
Hyperbolic paraboloid shells are doubly curved shells with negative Gaussian curvature; they are called HP or Hypar shells, and a subclass of them are called Saddle-type shells.
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HORN SPEAKER WITH HYPERBOLIC PARABOLOID LENS

The Journal of the Acoustical Society of America, 2013
The present invention is a new horn loudspeaker comprising multiple sound radiators mounted to the sidewalls of the horn. At least two sound radiators mounted to the sidewalls of the horn with a “Hyperbolic Paraboloid” (saddle point) shaped lens placed medially between the sound radiators creating an improved horn characteristics for more uniform ...
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Edge Effects in Hyperbolic Paraboloid Shells

Journal of the Structural Division, 1969
The influences of edge constraint upon the behaviour of single panel ruled surface hyperbolic paraboloids with straight generator boundaries are studied. With apex and base corners clamped in position and against rotation, each of the degenerate clamped, simple and free edge conditions are considered and shown to represent the extreme behaviour of ...
James G.A. Croll, John C. Scrivener
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Point loading on hyperbolic paraboloidal shells

Experimental Mechanics, 1968
A combination of simple theory and experiment is used to investigated a complex structural problem. The problem is the point loading of hyperbolic paraboloidal shells. The solution is based on an analogy between the response of these shells to a point load and the localized behavior of a flat plate that rests on an elastic foundation.
R. H. Leiceter, K. B. Schuster
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Reinforced Concrete Hyperbolic Paraboloid Shells

Journal of the Structural Division, 1975
An experimental study is presented of the behavior of reinforced concrete inverted umbrella hypar shell models loaded with uniform load to failure. Reinforced microconcrete model shells with three different edge member geometries were tested. The shell strength was controlled by the tensile edge members around the periphery of the shell, and was ...
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Buckling of Orthotropic Hyperbolic Paraboloid Shells

Journal of the Structural Division, 1972
The note examines the classic paper by Reissner on buckling of isotropic hyperbolic paraboloid shells.
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Analysis of a hyperbolic paraboloid

2017
Because of its structural properties, simplicity of construction, economy, and the wide number of shapes that can be obtained from combinations of parabolas of different curvatures and from sections with principal axes rotated or translated, the Hyperbolic Paraboloid has become a popular form for roof shells.
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