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 It might be outdated or ideologically biased.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.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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