The basic type of response of multi-degree-of-freedom systems is free undampedvibration. Analogous to single degree of freedom systems the analysis of freevibration yields the natural frequencies of the system. For the analysis, the elastic
vibration. Analogous to single degree of freedom systems the analysis of free
vibration yields the natural frequencies of the system. For the analysis, the elastic
(restoring) properties of the system must be described first. This can either be done
in terms of stiffness or flexibility
