Results 11 to 20 of about 29,707 (308)

ASPECTS AND GEOMETRIC INTERPRETATION IN SOLVING CONICAL SECTIONS

open access: yesJournal of Industrial Design and Engineering Graphics, 2019
In mathematics, a conic is the curve that is obtained by intersecting a plane with a cone. Is well known that the shape of this curve may differ quite a bit depending on the position of the intersection plane relative to the cone axis, as it is actually ...
Alina DUTA   +4 more
doaj   +5 more sources

Testing of a Composite Conical-Cylindrical Shell

open access: yes, 2023
Launch-vehicle shell structures, which can be comprised of both cylindrical and conical sections, are known to be susceptible to buckling due to their large radius-to-thickness ratios.
Bisagni, C. (author)   +12 more
core   +1 more source

Advantages of Friction Welding of Fittings with Small Diameter Conical Contact Form

open access: yesAdvanced Engineering Research, 2023
Introduction. As numerous production tests show, the use of manual arc welding (MAW) of thick-walled fittings of small diameter (up to 80 mm) does not provide a high-quality weld joint that meets the requirements of regulatory and technical documents of ...
Yu. V. Poletaev, V. V. Shchepkin
doaj   +1 more source

Gross plastic deformation of axisymmetric pressure vessel heads [PDF]

open access: yes, 2006
The gross plastic deformation and associated plastic loads of four axisymmetric torispherical pressure vessels are determined by two criteria of plastic collapse: the ASME twice elastic slope (TES) criterion and the recently proposed plastic work ...
Camilleri, D.   +5 more
core   +1 more source

Insect ventral radar cross-section polarisation dependence measurements for radar entomology [PDF]

open access: yes, 2006
Radar entomology has developed such that routine long-term monitoring of insect flight through the atmospheric boundary layer is now practical. Typical entomological radars use X-band (9.4 GHz) marine transceivers with a vertical pencil beam and rotate ...
Aldhous, Anthony C., Hobbs, Stephen
core   +1 more source

Trichome morphology in Teucrium L. (Labiatae). A taxonomic review

open access: yesAnales del Jardín Botánico de Madrid, 1999
The micromorphology of trichomes of 56 Teucrium L. species belonging to the 9 sections of the genus in the Mediterranean área was surveyed by scanning electrón microscopy (SEM) of leaves, calyx, corolla and nutlets.
Teresa Navarro, Jalal el Oualidi
doaj   +1 more source

On the influence of turbulent kinetic energy level on accuracy of k − ε and LRR turbulence models [PDF]

open access: yesTheoretical and Applied Mechanics, 2018
This paper presents research regarding the influence of turbulent kinetic energy (TKE) level on accuracy of Reynolds averaged Navier–Stokes (RANS) based turbulence models.
Novković Đorđe M.   +3 more
doaj   +1 more source

The analysis of distributions of effective strain and flow stress in longitudinal sections of cold backward extruded copper cans for different punch-face shapes

open access: yesITM Web of Conferences, 2017
The paper presents computer modelling results of researches on cold backward extrusion of copper cans. The calculations were carried out using the commercial code QFORM-2D, based on the Finite Element Method (FEM).
Miłek Tomasz
doaj   +1 more source

Analysis of quantum scattering characteristics for a cone illuminated with multiphoton in the remote sensing scene

open access: yesResults in Physics, 2023
The quantum radar cross sections (QRCS) for the targets are the critical basis for the optimization designs of stealth structures and quantum detection strategy.
Zhifu Tian   +4 more
doaj   +1 more source

Influence of elongation factor on distributions of effective strain and flow stress for pushing through a conical die process of round bars made from S355 steel

open access: yesMATEC Web of Conferences, 2019
The paper presents computer modelling results of researches on pushing through a conical die process of round bars. Calculations were carried out using the commercial code QFORM-2D, based on the Finite Element Method (FEM).
Miłek Tomasz
doaj   +1 more source

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