Some problems with solving discrete computational models of bridge structures.

Vehicle –bridge interaction is an interesting problem solved by engineers all over the world. Computing models of vehicles are usually created as systems composed by discrete members as mass points, spring and damper members. Computing models of bridges can be created as systems with continuously distributed mass or as systems with lumped masses. Some possible problems with application of such computing models are explained in the paper. Similar problem must be solved in the case of finite element bridge computing model. [ABSTRACT FROM AUTHOR]