Results 31 to 40 of about 148,947 (238)

Non-dispersive and weakly dispersive single-layer flow over an axisymmetric obstacle: the equivalent aerofoil formulation [PDF]

open access: yes, 2007
Non-dispersive and weakly dispersive single-layer flows over axisymmetric obstacles, of non-dimensional height M measured relative to the layer depth, are investigated. The case of transcritical flow, for which the Froude number F of the oncoming flow is
Esler, JG, Johnson, ER, Rump, OJ
core   +1 more source

Aeroelastic Experimental Investigation of Hyperbolic Paraboloid Membrane Structures in Normal and Typhoon Winds

open access: yesSustainability, 2022
The lightweight and flexible membrane structure of roofs are susceptible to wind loads with the risk of damage and failure. Compared with uniform and low-level turbulence flow cases (i.e., normal winds) that have been well investigated, the wind-induced ...
Dong Li   +4 more
semanticscholar   +1 more source

APPLICATION OF RULED SURFACES IN FREEFORM AND GEAR METROLOGY

open access: yesActa Polytechnica, 2021
An application of two ruled surfaces (i.e., surfaces generated by a motion of a straight line), a surface of hyperbolic paraboloid and a tangent surface of a cylindrical helix in freeform and gear metrology is introduced in this paper. Both surfaces have
Ivana Linkeová, Vít Zelený
doaj   +1 more source

Contour Measurement of Object with Arbitrary Surface Using Two-Dimensional Shearography with Source Displacement

open access: yesOptics, 2022
A two-dimensional (2D) shearography with source displacement is proposed to measure object contours. Using a dual-shear shearographic setup with two movable laser sources, the full-field slopes along a pair of orthogonal shear directions were obtained ...
Miao Yu   +3 more
doaj   +1 more source

Shape dependence of wind pressure peak factor statistics in hyperbolic paraboloid roofs

open access: yesJournal of Building Engineering, 2021
The complex shape dependence of wind pressure’s peak factors (PFs) makes it difficult to predict their values for all geometries by using analytical models.
F. Rizzo, M. Barbato, V. Sepe
semanticscholar   +1 more source

Invariant and smooth limit of discrete geometry folded from bistable origami leading to multistable metasurfaces

open access: yesNature Communications, 2019
The mechanisms behind origami having saddle shapes made from concentrically pleated squares remain elusive. Here, the authors connect geometry and mechanics to show that this type of origami is invariantly a hyperbolic paraboloid that exhibits ...
Ke Liu   +2 more
doaj   +1 more source

Affine sphere relativity [PDF]

open access: yes, 2016
We investigate spacetimes whose light cones could be anisotropic. We prove the equivalence of the structures: (a) Lorentz-Finsler manifold for which the mean Cartan torsion vanishes, (b) Lorentz-Finsler manifold for which the indicatrix (observer space ...
Minguzzi, E.
core   +2 more sources

Integrated Parametric Shaping of Curvilinear Steel Bar Structures of Canopy Roofs

open access: yesBuildings, 2019
Shaping building objects is conditioned by many interrelated factors, both architectural and structural. Modern tools for shaping structures working in the environment of Rhinoceros 3D such as Grasshopper and Karamba 3D enable algorithmic-aided shaping ...
Jolanta Dzwierzynska
doaj   +1 more source

Dynamic Application of Matlab in Teaching of Hyperbolic Paraboloid

open access: yesAdvances in Engineering Technology Research, 2022
 In teaching of hyperbolic paraboloid, this paper breaks through the traditional teaching method. Through its theoretical analysis, combined with graphic visualization of MATLAB software, this paper shows two formation processes and notch transformation ...
Wenhu Zheng, Xia He
semanticscholar   +1 more source

Mode Pressure Coefficient Maps as an Alternative to Mean Pressure Coefficient Maps for Non-Gaussian Processes: Hyperbolic Paraboloid Roofs as Cases of Study

open access: yesComputation, 2018
Wind tunnel experiments are necessary for geometries that are not investigated by codes or that are not generally and parametrically investigated by literature.
Alberto Viskovic
doaj   +1 more source

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