March 29, 2018

The transmissibility of a resonance refers to the ratio of the input acceleration to the response acceleration. Transmissibility answers the question how much greater the acceleration of the resonance is than the input acceleration. In our case, the input acceleration is the acceleration of the control, and the response acceleration is the acceleration of the end of the metal beam. In Figure 4.1, consider the resonance of the metal beam at 538.1Hz. Here, the response acceleration was 33.11G. The control acceleration was 1.034G. The transmissibility of the resonance, therefore, is 33.11G / 1.034G = 32.02. The transmissibility graph in Figure 4.1 shows transmissibility 32.03G at 538.1 Hz.