As previously stated, a similar cal

As previously stated, a similar calculation would need to be performed at the other probe location(s). The unbalance sensitivities determined are only applicable for a particular unbalance distribution and speed. Therefore, the sensitivities would need to be calculated for each unbalance distribution. As a side note, the unbalance sensitivities are equivalent to influence coefficients measured during balancing procedures. With this calculated level of unbalance applied, the response at all the critical clearance locations must be deter-mined. The results are typically displayed using a rotor deflection plot at the critical speed of concern. For the exam-ple compressor, Figure 2-71 presents the rotor deflection plot with the rotor at 1,850 rpm in both two and three-dimensional views. As with a Bode plot, the identifying parameters to cre-ate the plot should be shown. The three-dimensional plot illustrates the orbital response at the individual stations across the entire rotor. As concluded earlier, this critical speed at 1,850 rpm is dominated by response in the vertical direction and Figure 2-71 reaffirms this. Here one can also see that the response at the bearings is not indicative of the rest of the