Vibration of a Complex Strings System under a Moving Force

We consider vibrations of an elastically connected double‐spring complex system subjected to moving concentrated forces. This system is treated as two strings connected by an elastic layer. The motion of the system is described by two partial differential equations. It is shown that some solutions of the system response can be obtained not only as series but also in closed forms. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)