Three—Dimensional Systems and Special Problems
Although continuum mechanics is much better developed than discrete field mechanics, there is available only a small number of useful three dimensional solutions in the continua; however, it is relatively easy to write discrete field solutions to a variety of functional three-dimensional lattices and two such systems will be analyzed briefly in this section. A three dimensional system is one for which three coordinates are required to locate a typical node. This is as distinct from a latticed shell for example which is a space structure of only two dimensions as regards the number of surface or projected plane coordinates required to define a typical node. (Latticed shells are often improperly designated as three dimensional structures).
KeywordsGround Motion Typical Node Cable Tension Latticed Shell Ground Excitation
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