ABSTRACT
Regarding boundary conditions, as with the rotating string, at one end (the top) there is simply a fixed point. At the lower end there are at least three boundary conditions of practical interest: a free end, a fixed end, or an inertial, hanging load free to vibrate (or “swing”) laterally. In the third case, the cable vibrations “tug” at the load mass, causing it to accelerate. The moving load, in turn, then drives the cable motion. If of interest, this coupling of the two dynamic systems must also be modeled in TLM.
