# Two-Dimensional System

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

## Two-Dimensional System

in structural mechanics, a system of construction in which the axes of symmetry of all elements and the lines of action of the external forces are located in one plane. In construction practice, two-dimensional systems are not used alone but are usually combined with one another in three dimensions. However, in order to simplify engineering calculations, many structures are treated as a combination of two-dimensional systems in computing procedures. For example, the skeleton of an industrial or public building, which constitutes a three-dimensional system, is replaced by a system of flat frames for analysis. A similar dissection into two-dimensional systems is performed when analyzing the trusses of bridge spans, hoisting cranes, and other structures.

References in periodicals archive ?
The two-dimensional system is a specialized microscope that focuses a bright white light directly down onto the surface of the audio media.
When the same laws are applied to a two-dimensional system, the laws of physics allow for a third possibility.
In a practical two-dimensional system, carriers are usually confined by barriers and the external field ([F.sub.ext]).
In this subsection, we will pay our attention to the Turing instability analysis for the following two-dimensional system:
The necessary and sufficient condition for a two-dimensional system (6) to be complex linearizable is that the two planes determined by (19) intersect at right angle resulting in a straight line which corresponds to scalar linear equations.
He covers the technical background, theoretical fundamentals of the perturbation approach, application to a two-dimensional system, application to a three-dimensional helicopter model, and a complete combined approach.
Perhaps more importantly, its peculiar band structure affords a physical realization of a two-dimensional system of mass-less spin 1/2 Fermions.
The three-dimensional bioreactor produced up to 1.2 million platelets per day, with production continuing for more than 32 days, while the two-dimensional system generated a maximum of about 350,000 platelets per day over a ten-day period.
A laser-based Microgage two-dimensional system measures the flatness of machinery and production equipment.
AFSolid is essentially a two-dimensional system that considers heat flow picture of the actual behavior of the casting than is possible with heat transfer equations alone.

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