Note that each harmonic will have the same number of nodal ... except for the sine wave (which has to be synthesized), all periodic vibrations we encounter have more than one frequency component. In ...

From this procedure we are able to see that the response of the building is dominated by the jth mode when the frequency of excitation is tuned to near the jth natural frequency. Shown below are ...

"At a far greater frequency, this resembles the spontaneous ... side to side and front to back. The harmonic vibrations move between 25 to 50 times per second, activating the corresponding muscles.

For harmonic excitation on a single-DOF system, this total response will be composed of two frequencies: the natural frequency and the forcing frequency. With damping, the component with the natural ...