# Catenary

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## catenary

[′kat·ə‚ner·ē]
(materials)
In fiberglass-reinforced plastics, a measure of the sag in an assemblage of a number of strands, which have a minimal amount of twist, at the midpoint of a specified length.
(mathematics)
The curve obtained by suspending a uniform chain by its two ends; the graph of the hyperbolic cosine function. Also known as alysoid; chainette.

## Catenary

The curve assumed by a flexible uniform cable suspended freely between two points. When uniformly loaded, the curve takes the form of a parabola.

## catenary

The curve formed by a flexible cord hung between two points of support.
References in periodicals archive ?
These are electric hybrid trucks manufactured by Scania and adapted, in collaboration with Siemens, to operate under the catenary system.
To obtain more accurate results, in this paper, the catenary cable element was adopted to model the suspension bridges' main cable system, the sliding effect was considered in the form-finding procedure based on the assumption that the main cable on the saddles' aspect is tangent to the saddles' surface, and then, the calculation procedure for form-finding analysis under bridge finished state and tangent stiffness matrix for the flexibility iterative procedure were given and derived, respectively, the form-finding analysis for other construction stages was also discussed.
In this paper, one of those formulas will be used as the catenary equation.
The research service provides a detailed assessment of the type of catenary systems used in top 6 leading European rail networks - Germany, France, Italy, Spain, the United Kingdom and Poland.
This contract includes services of studies, supplies, works, tests and commissioning associated with railway track equipment 60e1 on monobloc sleepers and switches with their maneuvering systems; catenary equipment type 1V 1500V; control and control equipment for switches, retractable knockers and retractable catenary elements; linear equipment in tunnel and trench of the access road to the SMI (sidewalk including multitubular, cable trays, dry column).
In March 2004, the Deep Blue completed the infield pipelines, as well as the steel catenary risers (SCR's) that will bring a production totaling 110,000 barrels of oil and 425 million cubic feet of gas (per day) from below the seabed to the Na Kika platform processing plant.
Bluewater will design and supply the SPM system, consisting of a square, turret catenary anchor leg mooring (CALM) buoy, the pipeline end manifold (PLEM), submarine and floating hoses for operation in about 26 m of water at a location off the southeastern coast of Trinidad, approximately 4 nautical miles southwest of Galeota Point offshore Guayaguayare Bay.
The approximately 44 miles of flowlines and associated steel catenary risers ("SCR's") for Habanero and Llano are scheduled for installation in the summer and the fall of 2003, respectively.

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