A simple method is proposed for estimating the resonant peak response levels of damped structures, by using an analysis of undamped vibration. The method is based on a simple identity which is exact for a single degree of freedom system and approximate for more general systems. However, since the level of damping in practical structures can seldom be described with any precision, it is argued that a simple approximate method for predicting resonant vibration levels is the most appropriate. A number of examples and applications are described. © 1975.
Ewins, D. J. (1975). Estimation of resonant peak amplitudes. Journal of Sound and Vibration, 43(4), 595–605. https://doi.org/10.1016/0022-460X(75)90222-9