The response of a vibrating structure as a function of structural parameters

The response of a structure excited by an external oscillatory force is examined for variations in certain structural parameters of the system. This is done with a view to manipulating the structure in order to achieve a desired response. The variation of the response with one structural parameter is seen to be simple, and the effect of changing in addition the forcing frequency is illustrated. When two structural parameters are considered, it is seen that a desired response may or may not be attainable, as defined by a “feasible response region”. The application to practical cases is discussed briefly.